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Finding the Fourth Proportional to 69,412.70, 95,773.05 and 42,188.31

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Solution

The fourth proportional to 69,412.70, 95,773.05 and 42,188.31 is: 58,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,412.70 : 95,773.05 = 42,188.31 : x
  2. Step 2: Convert to fraction form
    69,412.70/95,773.05 = 42,188.31/x
  3. Step 3: Cross multiply
    69,412.70x = 95,773.05 × 42,188.31
  4. Step 4: Simplify right side
    69,412.70x = 4,040,503,123.05
  5. Step 5: Solve for x
    x = 4,040,503,123.05/69,412.70
  6. Step 6: Final answer
    x = 58,209.85

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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.