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Finding the Fourth Proportional to 69,406.80, 95,757.80 and 39,188.56

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Solution

The fourth proportional to 69,406.80, 95,757.80 and 39,188.56 is: 54,066.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,406.80 : 95,757.80 = 39,188.56 : x
  2. Step 2: Convert to fraction form
    69,406.80/95,757.80 = 39,188.56/x
  3. Step 3: Cross multiply
    69,406.80x = 95,757.80 × 39,188.56
  4. Step 4: Simplify right side
    69,406.80x = 3,752,610,290.77
  5. Step 5: Solve for x
    x = 3,752,610,290.77/69,406.80
  6. Step 6: Final answer
    x = 54,066.90

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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.