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Finding the Fourth Proportional to 69,991.70, 105,480.38 and 63,337.16

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Solution

The fourth proportional to 69,991.70, 105,480.38 and 63,337.16 is: 95,451.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,991.70 : 105,480.38 = 63,337.16 : x
  2. Step 2: Convert to fraction form
    69,991.70/105,480.38 = 63,337.16/x
  3. Step 3: Cross multiply
    69,991.70x = 105,480.38 × 63,337.16
  4. Step 4: Simplify right side
    69,991.70x = 6,680,827,704.92
  5. Step 5: Solve for x
    x = 6,680,827,704.92/69,991.70
  6. Step 6: Final answer
    x = 95,451.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.