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Finding the Fourth Proportional to 54,956.40, 82,337.40 and 47,180.40

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Solution

The fourth proportional to 54,956.40, 82,337.40 and 47,180.40 is: 70,687.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,956.40 : 82,337.40 = 47,180.40 : x
  2. Step 2: Convert to fraction form
    54,956.40/82,337.40 = 47,180.40/x
  3. Step 3: Cross multiply
    54,956.40x = 82,337.40 × 47,180.40
  4. Step 4: Simplify right side
    54,956.40x = 3,884,711,466.96
  5. Step 5: Solve for x
    x = 3,884,711,466.96/54,956.40
  6. Step 6: Final answer
    x = 70,687.15

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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.