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Finding the Fourth Proportional to 657,655.20, 986,871.60 and 479,714.40

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Solution

The fourth proportional to 657,655.20, 986,871.60 and 479,714.40 is: 719,855.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,655.20 : 986,871.60 = 479,714.40 : x
  2. Step 2: Convert to fraction form
    657,655.20/986,871.60 = 479,714.40/x
  3. Step 3: Cross multiply
    657,655.20x = 986,871.60 × 479,714.40
  4. Step 4: Simplify right side
    657,655.20x = 473,416,517,471.04
  5. Step 5: Solve for x
    x = 473,416,517,471.04/657,655.20
  6. Step 6: Final answer
    x = 719,855.20

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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.