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Finding the Fourth Proportional to 1,080,698,207.72, 1,491,364,801.68 and 585,660,916.22

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Solution

The fourth proportional to 1,080,698,207.72, 1,491,364,801.68 and 585,660,916.22 is: 808,212,755.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,698,207.72 : 1,491,364,801.68 = 585,660,916.22 : x
  2. Step 2: Convert to fraction form
    1,080,698,207.72/1,491,364,801.68 = 585,660,916.22/x
  3. Step 3: Cross multiply
    1,080,698,207.72x = 1,491,364,801.68 × 585,660,916.22
  4. Step 4: Simplify right side
    1,080,698,207.72x = 873,434,076,170,167,424
  5. Step 5: Solve for x
    x = 873,434,076,170,167,424/1,080,698,207.72
  6. Step 6: Final answer
    x = 808,212,755.36

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Half scale
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Double scale
Find fourth proportional to 1,080,698,208.72, 1,491,364,803.06 and 585,660,917.22
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.