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Finding the Fourth Proportional to 91,836.75, 137,755.13 and 36,432.75

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Solution

The fourth proportional to 91,836.75, 137,755.13 and 36,432.75 is: 54,649.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,836.75 : 137,755.13 = 36,432.75 : x
  2. Step 2: Convert to fraction form
    91,836.75/137,755.13 = 36,432.75/x
  3. Step 3: Cross multiply
    91,836.75x = 137,755.13 × 36,432.75
  4. Step 4: Simplify right side
    91,836.75x = 5,018,798,212.51
  5. Step 5: Solve for x
    x = 5,018,798,212.51/91,836.75
  6. Step 6: Final answer
    x = 54,649.13

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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.