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Finding the Fourth Proportional to 625,331,598.81, 938,005,380.78 and 165,265,793.25

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Solution

The fourth proportional to 625,331,598.81, 938,005,380.78 and 165,265,793.25 is: 247,900,799.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,331,598.81 : 938,005,380.78 = 165,265,793.25 : x
  2. Step 2: Convert to fraction form
    625,331,598.81/938,005,380.78 = 165,265,793.25/x
  3. Step 3: Cross multiply
    625,331,598.81x = 938,005,380.78 × 165,265,793.25
  4. Step 4: Simplify right side
    625,331,598.81x = 155,020,203,327,375,008
  5. Step 5: Solve for x
    x = 155,020,203,327,375,008/625,331,598.81
  6. Step 6: Final answer
    x = 247,900,799.55

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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.