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Finding the Fourth Proportional to 68,558,113.35, 102,835,978.92 and 27,616,505.90

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Solution

The fourth proportional to 68,558,113.35, 102,835,978.92 and 27,616,505.90 is: 41,424,279.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,558,113.35 : 102,835,978.92 = 27,616,505.90 : x
  2. Step 2: Convert to fraction form
    68,558,113.35/102,835,978.92 = 27,616,505.90/x
  3. Step 3: Cross multiply
    68,558,113.35x = 102,835,978.92 × 27,616,505.90
  4. Step 4: Simplify right side
    68,558,113.35x = 2,839,970,418,062,275.50
  5. Step 5: Solve for x
    x = 2,839,970,418,062,275.50/68,558,113.35
  6. Step 6: Final answer
    x = 41,424,279.04

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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.