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Finding the Fourth Proportional to 124,521.67, 171,839.10 and 70,806.70

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Solution

The fourth proportional to 124,521.67, 171,839.10 and 70,806.70 is: 97,712.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,521.67 : 171,839.10 = 70,806.70 : x
  2. Step 2: Convert to fraction form
    124,521.67/171,839.10 = 70,806.70/x
  3. Step 3: Cross multiply
    124,521.67x = 171,839.10 × 70,806.70
  4. Step 4: Simplify right side
    124,521.67x = 12,167,359,601.97
  5. Step 5: Solve for x
    x = 12,167,359,601.97/124,521.67
  6. Step 6: Final answer
    x = 97,712.79

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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.