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Finding the Fourth Proportional to 591,862.20, 887,793.30 and 402,905.40

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Solution

The fourth proportional to 591,862.20, 887,793.30 and 402,905.40 is: 604,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,862.20 : 887,793.30 = 402,905.40 : x
  2. Step 2: Convert to fraction form
    591,862.20/887,793.30 = 402,905.40/x
  3. Step 3: Cross multiply
    591,862.20x = 887,793.30 × 402,905.40
  4. Step 4: Simplify right side
    591,862.20x = 357,696,714,653.82
  5. Step 5: Solve for x
    x = 357,696,714,653.82/591,862.20
  6. Step 6: Final answer
    x = 604,358.10

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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.