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Finding the Fourth Proportional to 68,548.52, 102,837.92 and 29,139.32

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Solution

The fourth proportional to 68,548.52, 102,837.92 and 29,139.32 is: 43,715.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,548.52 : 102,837.92 = 29,139.32 : x
  2. Step 2: Convert to fraction form
    68,548.52/102,837.92 = 29,139.32/x
  3. Step 3: Cross multiply
    68,548.52x = 102,837.92 × 29,139.32
  4. Step 4: Simplify right side
    68,548.52x = 2,996,627,059.01
  5. Step 5: Solve for x
    x = 2,996,627,059.01/68,548.52
  6. Step 6: Final answer
    x = 43,715.42

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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.