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Finding the Fourth Proportional to 58,769.82, 81,125.50 and 39,660.91

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Solution

The fourth proportional to 58,769.82, 81,125.50 and 39,660.91 is: 54,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,769.82 : 81,125.50 = 39,660.91 : x
  2. Step 2: Convert to fraction form
    58,769.82/81,125.50 = 39,660.91/x
  3. Step 3: Cross multiply
    58,769.82x = 81,125.50 × 39,660.91
  4. Step 4: Simplify right side
    58,769.82x = 3,217,511,154.21
  5. Step 5: Solve for x
    x = 3,217,511,154.21/58,769.82
  6. Step 6: Final answer
    x = 54,747.68

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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.