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Finding the Fourth Proportional to 83,576.01, 115,306.85 and 47,740.65

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Solution

The fourth proportional to 83,576.01, 115,306.85 and 47,740.65 is: 65,866.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,576.01 : 115,306.85 = 47,740.65 : x
  2. Step 2: Convert to fraction form
    83,576.01/115,306.85 = 47,740.65/x
  3. Step 3: Cross multiply
    83,576.01x = 115,306.85 × 47,740.65
  4. Step 4: Simplify right side
    83,576.01x = 5,504,823,729.75
  5. Step 5: Solve for x
    x = 5,504,823,729.75/83,576.01
  6. Step 6: Final answer
    x = 65,866.07

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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.