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Finding the Fourth Proportional to 115,486.50, 159,371.45 and 62,494.50

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Solution

The fourth proportional to 115,486.50, 159,371.45 and 62,494.50 is: 86,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,486.50 : 159,371.45 = 62,494.50 : x
  2. Step 2: Convert to fraction form
    115,486.50/159,371.45 = 62,494.50/x
  3. Step 3: Cross multiply
    115,486.50x = 159,371.45 × 62,494.50
  4. Step 4: Simplify right side
    115,486.50x = 9,959,839,082.03
  5. Step 5: Solve for x
    x = 9,959,839,082.03/115,486.50
  6. Step 6: Final answer
    x = 86,242.45

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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.