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Finding the Fourth Proportional to 91,671.48, 137,428.80 and 41,733.72

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Solution

The fourth proportional to 91,671.48, 137,428.80 and 41,733.72 is: 62,564.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,671.48 : 137,428.80 = 41,733.72 : x
  2. Step 2: Convert to fraction form
    91,671.48/137,428.80 = 41,733.72/x
  3. Step 3: Cross multiply
    91,671.48x = 137,428.80 × 41,733.72
  4. Step 4: Simplify right side
    91,671.48x = 5,735,415,059.14
  5. Step 5: Solve for x
    x = 5,735,415,059.14/91,671.48
  6. Step 6: Final answer
    x = 62,564.88

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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.