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Finding the Fourth Proportional to 52,750.62, 79,125.67 and 21,585.87

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Solution

The fourth proportional to 52,750.62, 79,125.67 and 21,585.87 is: 32,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,750.62 : 79,125.67 = 21,585.87 : x
  2. Step 2: Convert to fraction form
    52,750.62/79,125.67 = 21,585.87/x
  3. Step 3: Cross multiply
    52,750.62x = 79,125.67 × 21,585.87
  4. Step 4: Simplify right side
    52,750.62x = 1,707,996,426.28
  5. Step 5: Solve for x
    x = 1,707,996,426.28/52,750.62
  6. Step 6: Final answer
    x = 32,378.70

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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.