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Finding the Fourth Proportional to 52,479.72, 78,631.92 and 36,869.40

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Solution

The fourth proportional to 52,479.72, 78,631.92 and 36,869.40 is: 55,242.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,479.72 : 78,631.92 = 36,869.40 : x
  2. Step 2: Convert to fraction form
    52,479.72/78,631.92 = 36,869.40/x
  3. Step 3: Cross multiply
    52,479.72x = 78,631.92 × 36,869.40
  4. Step 4: Simplify right side
    52,479.72x = 2,899,111,711.25
  5. Step 5: Solve for x
    x = 2,899,111,711.25/52,479.72
  6. Step 6: Final answer
    x = 55,242.51

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