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Finding the Fourth Proportional to 84,548.61, 116,331.39 and 73,181.88

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Solution

The fourth proportional to 84,548.61, 116,331.39 and 73,181.88 is: 100,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,548.61 : 116,331.39 = 73,181.88 : x
  2. Step 2: Convert to fraction form
    84,548.61/116,331.39 = 73,181.88/x
  3. Step 3: Cross multiply
    84,548.61x = 116,331.39 × 73,181.88
  4. Step 4: Simplify right side
    84,548.61x = 8,513,349,823.21
  5. Step 5: Solve for x
    x = 8,513,349,823.21/84,548.61
  6. Step 6: Final answer
    x = 100,691.78

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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.