Home / 85,385,213.40-128,077,820.10-21,559,805.40

Finding the Fourth Proportional to 85,385,213.40, 128,077,820.10 and 21,559,805.40

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Solution

The fourth proportional to 85,385,213.40, 128,077,820.10 and 21,559,805.40 is: 32,339,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,385,213.40 : 128,077,820.10 = 21,559,805.40 : x
  2. Step 2: Convert to fraction form
    85,385,213.40/128,077,820.10 = 21,559,805.40/x
  3. Step 3: Cross multiply
    85,385,213.40x = 128,077,820.10 × 21,559,805.40
  4. Step 4: Simplify right side
    85,385,213.40x = 2,761,332,877,412,208
  5. Step 5: Solve for x
    x = 2,761,332,877,412,208/85,385,213.40
  6. Step 6: Final answer
    x = 32,339,708.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.