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Finding the Fourth Proportional to 124,493.66, 171,752.29 and 76,663.97

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Solution

The fourth proportional to 124,493.66, 171,752.29 and 76,663.97 is: 105,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,493.66 : 171,752.29 = 76,663.97 : x
  2. Step 2: Convert to fraction form
    124,493.66/171,752.29 = 76,663.97/x
  3. Step 3: Cross multiply
    124,493.66x = 171,752.29 × 76,663.97
  4. Step 4: Simplify right side
    124,493.66x = 13,167,211,357.57
  5. Step 5: Solve for x
    x = 13,167,211,357.57/124,493.66
  6. Step 6: Final answer
    x = 105,766.12

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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.