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Finding the Fourth Proportional to 625,071.67, 862,603.05 and 338,591.76

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Solution

The fourth proportional to 625,071.67, 862,603.05 and 338,591.76 is: 467,258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,071.67 : 862,603.05 = 338,591.76 : x
  2. Step 2: Convert to fraction form
    625,071.67/862,603.05 = 338,591.76/x
  3. Step 3: Cross multiply
    625,071.67x = 862,603.05 × 338,591.76
  4. Step 4: Simplify right side
    625,071.67x = 292,070,278,874.89
  5. Step 5: Solve for x
    x = 292,070,278,874.89/625,071.67
  6. Step 6: Final answer
    x = 467,258.86

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1.5x scale

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.