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Finding the Fourth Proportional to 415,920.30, 622,714.05 and 404,256.30

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Solution

The fourth proportional to 415,920.30, 622,714.05 and 404,256.30 is: 605,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,920.30 : 622,714.05 = 404,256.30 : x
  2. Step 2: Convert to fraction form
    415,920.30/622,714.05 = 404,256.30/x
  3. Step 3: Cross multiply
    415,920.30x = 622,714.05 × 404,256.30
  4. Step 4: Simplify right side
    415,920.30x = 251,736,077,811.02
  5. Step 5: Solve for x
    x = 251,736,077,811.02/415,920.30
  6. Step 6: Final answer
    x = 605,250.76

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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.