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Finding the Fourth Proportional to 65,251.28, 90,053.08 and 36,575.81

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Solution

The fourth proportional to 65,251.28, 90,053.08 and 36,575.81 is: 50,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,251.28 : 90,053.08 = 36,575.81 : x
  2. Step 2: Convert to fraction form
    65,251.28/90,053.08 = 36,575.81/x
  3. Step 3: Cross multiply
    65,251.28x = 90,053.08 × 36,575.81
  4. Step 4: Simplify right side
    65,251.28x = 3,293,764,343.99
  5. Step 5: Solve for x
    x = 3,293,764,343.99/65,251.28
  6. Step 6: Final answer
    x = 50,478.16

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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.