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Finding the Fourth Proportional to 49,711.70, 74,458.20 and 43,150.70

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Solution

The fourth proportional to 49,711.70, 74,458.20 and 43,150.70 is: 64,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,711.70 : 74,458.20 = 43,150.70 : x
  2. Step 2: Convert to fraction form
    49,711.70/74,458.20 = 43,150.70/x
  3. Step 3: Cross multiply
    49,711.70x = 74,458.20 × 43,150.70
  4. Step 4: Simplify right side
    49,711.70x = 3,212,923,450.74
  5. Step 5: Solve for x
    x = 3,212,923,450.74/49,711.70
  6. Step 6: Final answer
    x = 64,631.13

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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.