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Finding the Fourth Proportional to 106,572.56, 147,044.36 and 68,314.64

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Solution

The fourth proportional to 106,572.56, 147,044.36 and 68,314.64 is: 94,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,572.56 : 147,044.36 = 68,314.64 : x
  2. Step 2: Convert to fraction form
    106,572.56/147,044.36 = 68,314.64/x
  3. Step 3: Cross multiply
    106,572.56x = 147,044.36 × 68,314.64
  4. Step 4: Simplify right side
    106,572.56x = 10,045,282,517.43
  5. Step 5: Solve for x
    x = 10,045,282,517.43/106,572.56
  6. Step 6: Final answer
    x = 94,257.68

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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.