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Finding the Fourth Proportional to 67,753.16, 101,629.80 and 28,288.76

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Solution

The fourth proportional to 67,753.16, 101,629.80 and 28,288.76 is: 42,433.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,753.16 : 101,629.80 = 28,288.76 : x
  2. Step 2: Convert to fraction form
    67,753.16/101,629.80 = 28,288.76/x
  3. Step 3: Cross multiply
    67,753.16x = 101,629.80 × 28,288.76
  4. Step 4: Simplify right side
    67,753.16x = 2,874,981,021.05
  5. Step 5: Solve for x
    x = 2,874,981,021.05/67,753.16
  6. Step 6: Final answer
    x = 42,433.17

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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.