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Finding the Fourth Proportional to 99,593.88, 137,427.97 and 60,812.20

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Solution

The fourth proportional to 99,593.88, 137,427.97 and 60,812.20 is: 83,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,593.88 : 137,427.97 = 60,812.20 : x
  2. Step 2: Convert to fraction form
    99,593.88/137,427.97 = 60,812.20/x
  3. Step 3: Cross multiply
    99,593.88x = 137,427.97 × 60,812.20
  4. Step 4: Simplify right side
    99,593.88x = 8,357,296,206.03
  5. Step 5: Solve for x
    x = 8,357,296,206.03/99,593.88
  6. Step 6: Final answer
    x = 83,913.75

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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.