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Finding the Fourth Proportional to 604,447.40, 907,327.20 and 471,915.20

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Solution

The fourth proportional to 604,447.40, 907,327.20 and 471,915.20 is: 708,385.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,447.40 : 907,327.20 = 471,915.20 : x
  2. Step 2: Convert to fraction form
    604,447.40/907,327.20 = 471,915.20/x
  3. Step 3: Cross multiply
    604,447.40x = 907,327.20 × 471,915.20
  4. Step 4: Simplify right side
    604,447.40x = 428,181,497,053.44
  5. Step 5: Solve for x
    x = 428,181,497,053.44/604,447.40
  6. Step 6: Final answer
    x = 708,385.04

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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.