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Finding the Fourth Proportional to 92,616.60, 138,921.03 and 39,293.94

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Solution

The fourth proportional to 92,616.60, 138,921.03 and 39,293.94 is: 58,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,616.60 : 138,921.03 = 39,293.94 : x
  2. Step 2: Convert to fraction form
    92,616.60/138,921.03 = 39,293.94/x
  3. Step 3: Cross multiply
    92,616.60x = 138,921.03 × 39,293.94
  4. Step 4: Simplify right side
    92,616.60x = 5,458,754,617.56
  5. Step 5: Solve for x
    x = 5,458,754,617.56/92,616.60
  6. Step 6: Final answer
    x = 58,939.27

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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.