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Finding the Fourth Proportional to 69,178.56, 95,459.52 and 38,963.04

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Solution

The fourth proportional to 69,178.56, 95,459.52 and 38,963.04 is: 53,765.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,178.56 : 95,459.52 = 38,963.04 : x
  2. Step 2: Convert to fraction form
    69,178.56/95,459.52 = 38,963.04/x
  3. Step 3: Cross multiply
    69,178.56x = 95,459.52 × 38,963.04
  4. Step 4: Simplify right side
    69,178.56x = 3,719,393,096.14
  5. Step 5: Solve for x
    x = 3,719,393,096.14/69,178.56
  6. Step 6: Final answer
    x = 53,765.11

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1.5x scale

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.