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Finding the Fourth Proportional to 71,708.49, 107,548.56 and 68,152.32

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Solution

The fourth proportional to 71,708.49, 107,548.56 and 68,152.32 is: 102,215.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,708.49 : 107,548.56 = 68,152.32 : x
  2. Step 2: Convert to fraction form
    71,708.49/107,548.56 = 68,152.32/x
  3. Step 3: Cross multiply
    71,708.49x = 107,548.56 × 68,152.32
  4. Step 4: Simplify right side
    71,708.49x = 7,329,683,876.66
  5. Step 5: Solve for x
    x = 7,329,683,876.66/71,708.49
  6. Step 6: Final answer
    x = 102,215.01

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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.