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Finding the Fourth Proportional to 591,717.20, 887,575.80 and 402,760.40

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Solution

The fourth proportional to 591,717.20, 887,575.80 and 402,760.40 is: 604,140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,717.20 : 887,575.80 = 402,760.40 : x
  2. Step 2: Convert to fraction form
    591,717.20/887,575.80 = 402,760.40/x
  3. Step 3: Cross multiply
    591,717.20x = 887,575.80 × 402,760.40
  4. Step 4: Simplify right side
    591,717.20x = 357,480,384,238.32
  5. Step 5: Solve for x
    x = 357,480,384,238.32/591,717.20
  6. Step 6: Final answer
    x = 604,140.60

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Similar ratio
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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.