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Finding the Fourth Proportional to 591,712.20, 887,568.30 and 402,755.40

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Solution

The fourth proportional to 591,712.20, 887,568.30 and 402,755.40 is: 604,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,712.20 : 887,568.30 = 402,755.40 : x
  2. Step 2: Convert to fraction form
    591,712.20/887,568.30 = 402,755.40/x
  3. Step 3: Cross multiply
    591,712.20x = 887,568.30 × 402,755.40
  4. Step 4: Simplify right side
    591,712.20x = 357,472,925,693.82
  5. Step 5: Solve for x
    x = 357,472,925,693.82/591,712.20
  6. Step 6: Final answer
    x = 604,133.10

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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.