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Finding the Fourth Proportional to 498,689.67, 748,034.55 and 124,712.67

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Solution

The fourth proportional to 498,689.67, 748,034.55 and 124,712.67 is: 187,069.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,689.67 : 748,034.55 = 124,712.67 : x
  2. Step 2: Convert to fraction form
    498,689.67/748,034.55 = 124,712.67/x
  3. Step 3: Cross multiply
    498,689.67x = 748,034.55 × 124,712.67
  4. Step 4: Simplify right side
    498,689.67x = 93,289,385,982.75
  5. Step 5: Solve for x
    x = 93,289,385,982.75/498,689.67
  6. Step 6: Final answer
    x = 187,069.02

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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.