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Finding the Fourth Proportional to 55,609.70, 76,732.89 and 31,738.10

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Solution

The fourth proportional to 55,609.70, 76,732.89 and 31,738.10 is: 43,793.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,609.70 : 76,732.89 = 31,738.10 : x
  2. Step 2: Convert to fraction form
    55,609.70/76,732.89 = 31,738.10/x
  3. Step 3: Cross multiply
    55,609.70x = 76,732.89 × 31,738.10
  4. Step 4: Simplify right side
    55,609.70x = 2,435,356,136.11
  5. Step 5: Solve for x
    x = 2,435,356,136.11/55,609.70
  6. Step 6: Final answer
    x = 43,793.73

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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.