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Finding the Fourth Proportional to 71,046.98, 98,042.97 and 39,215.19

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Solution

The fourth proportional to 71,046.98, 98,042.97 and 39,215.19 is: 54,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,046.98 : 98,042.97 = 39,215.19 : x
  2. Step 2: Convert to fraction form
    71,046.98/98,042.97 = 39,215.19/x
  3. Step 3: Cross multiply
    71,046.98x = 98,042.97 × 39,215.19
  4. Step 4: Simplify right side
    71,046.98x = 3,844,773,696.71
  5. Step 5: Solve for x
    x = 3,844,773,696.71/71,046.98
  6. Step 6: Final answer
    x = 54,115.93

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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.