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Finding the Fourth Proportional to 82,717.80, 123,939.90 and 47,596.20

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Solution

The fourth proportional to 82,717.80, 123,939.90 and 47,596.20 is: 71,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,717.80 : 123,939.90 = 47,596.20 : x
  2. Step 2: Convert to fraction form
    82,717.80/123,939.90 = 47,596.20/x
  3. Step 3: Cross multiply
    82,717.80x = 123,939.90 × 47,596.20
  4. Step 4: Simplify right side
    82,717.80x = 5,899,068,268.38
  5. Step 5: Solve for x
    x = 5,899,068,268.38/82,717.80
  6. Step 6: Final answer
    x = 71,315.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.