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Finding the Fourth Proportional to 108,428.88, 162,518.52 and 41,839.56

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Solution

The fourth proportional to 108,428.88, 162,518.52 and 41,839.56 is: 62,711.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,428.88 : 162,518.52 = 41,839.56 : x
  2. Step 2: Convert to fraction form
    108,428.88/162,518.52 = 41,839.56/x
  3. Step 3: Cross multiply
    108,428.88x = 162,518.52 × 41,839.56
  4. Step 4: Simplify right side
    108,428.88x = 6,799,703,368.65
  5. Step 5: Solve for x
    x = 6,799,703,368.65/108,428.88
  6. Step 6: Final answer
    x = 62,711.18

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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.