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Finding the Fourth Proportional to 54,711.20, 82,066.80 and 54,711.20

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Solution

The fourth proportional to 54,711.20, 82,066.80 and 54,711.20 is: 82,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,711.20 : 82,066.80 = 54,711.20 : x
  2. Step 2: Convert to fraction form
    54,711.20/82,066.80 = 54,711.20/x
  3. Step 3: Cross multiply
    54,711.20x = 82,066.80 × 54,711.20
  4. Step 4: Simplify right side
    54,711.20x = 4,489,973,108.16
  5. Step 5: Solve for x
    x = 4,489,973,108.16/54,711.20
  6. Step 6: Final answer
    x = 82,066.80

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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.