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Finding the Fourth Proportional to 69,391.74, 95,764.23 and 39,186.84

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Solution

The fourth proportional to 69,391.74, 95,764.23 and 39,186.84 is: 54,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,391.74 : 95,764.23 = 39,186.84 : x
  2. Step 2: Convert to fraction form
    69,391.74/95,764.23 = 39,186.84/x
  3. Step 3: Cross multiply
    69,391.74x = 95,764.23 × 39,186.84
  4. Step 4: Simplify right side
    69,391.74x = 3,752,697,558.73
  5. Step 5: Solve for x
    x = 3,752,697,558.73/69,391.74
  6. Step 6: Final answer
    x = 54,079.89

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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.