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Finding the Fourth Proportional to 68,939.93, 95,133.44 and 38,726.53

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Solution

The fourth proportional to 68,939.93, 95,133.44 and 38,726.53 is: 53,440.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,939.93 : 95,133.44 = 38,726.53 : x
  2. Step 2: Convert to fraction form
    68,939.93/95,133.44 = 38,726.53/x
  3. Step 3: Cross multiply
    68,939.93x = 95,133.44 × 38,726.53
  4. Step 4: Simplify right side
    68,939.93x = 3,684,187,877.15
  5. Step 5: Solve for x
    x = 3,684,187,877.15/68,939.93
  6. Step 6: Final answer
    x = 53,440.55

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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.