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Finding the Fourth Proportional to 52,079.87, 71,869.85 and 28,205.99

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Solution

The fourth proportional to 52,079.87, 71,869.85 and 28,205.99 is: 38,924.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,079.87 : 71,869.85 = 28,205.99 : x
  2. Step 2: Convert to fraction form
    52,079.87/71,869.85 = 28,205.99/x
  3. Step 3: Cross multiply
    52,079.87x = 71,869.85 × 28,205.99
  4. Step 4: Simplify right side
    52,079.87x = 2,027,160,270.40
  5. Step 5: Solve for x
    x = 2,027,160,270.40/52,079.87
  6. Step 6: Final answer
    x = 38,924.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.