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Finding the Fourth Proportional to 172,990.74, 238,726.53 and 93,502.74

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Solution

The fourth proportional to 172,990.74, 238,726.53 and 93,502.74 is: 129,033.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.74 : 238,726.53 = 93,502.74 : x
  2. Step 2: Convert to fraction form
    172,990.74/238,726.53 = 93,502.74/x
  3. Step 3: Cross multiply
    172,990.74x = 238,726.53 × 93,502.74
  4. Step 4: Simplify right side
    172,990.74x = 22,321,584,665.69
  5. Step 5: Solve for x
    x = 22,321,584,665.69/172,990.74
  6. Step 6: Final answer
    x = 129,033.41

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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.