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Finding the Fourth Proportional to 492,613.38, 739,020.15 and 155,706.66

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Solution

The fourth proportional to 492,613.38, 739,020.15 and 155,706.66 is: 233,591.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,613.38 : 739,020.15 = 155,706.66 : x
  2. Step 2: Convert to fraction form
    492,613.38/739,020.15 = 155,706.66/x
  3. Step 3: Cross multiply
    492,613.38x = 739,020.15 × 155,706.66
  4. Step 4: Simplify right side
    492,613.38x = 115,070,359,229.20
  5. Step 5: Solve for x
    x = 115,070,359,229.20/492,613.38
  6. Step 6: Final answer
    x = 233,591.62

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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.