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Finding the Fourth Proportional to 147,125.28, 203,074.56 and 86,730.96

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Solution

The fourth proportional to 147,125.28, 203,074.56 and 86,730.96 is: 119,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,125.28 : 203,074.56 = 86,730.96 : x
  2. Step 2: Convert to fraction form
    147,125.28/203,074.56 = 86,730.96/x
  3. Step 3: Cross multiply
    147,125.28x = 203,074.56 × 86,730.96
  4. Step 4: Simplify right side
    147,125.28x = 17,612,851,540.38
  5. Step 5: Solve for x
    x = 17,612,851,540.38/147,125.28
  6. Step 6: Final answer
    x = 119,713.29

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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.