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Finding the Fourth Proportional to 625,692, 864,167.76 and 424,138.08

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Solution

The fourth proportional to 625,692, 864,167.76 and 424,138.08 is: 585,793.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,692 : 864,167.76 = 424,138.08 : x
  2. Step 2: Convert to fraction form
    625,692/864,167.76 = 424,138.08/x
  3. Step 3: Cross multiply
    625,692x = 864,167.76 × 424,138.08
  4. Step 4: Simplify right side
    625,692x = 366,526,454,524.30
  5. Step 5: Solve for x
    x = 366,526,454,524.30/625,692
  6. Step 6: Final answer
    x = 585,793.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.