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Finding the Fourth Proportional to 65,471.64, 90,351.48 and 37,177.92

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Solution

The fourth proportional to 65,471.64, 90,351.48 and 37,177.92 is: 51,305.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,471.64 : 90,351.48 = 37,177.92 : x
  2. Step 2: Convert to fraction form
    65,471.64/90,351.48 = 37,177.92/x
  3. Step 3: Cross multiply
    65,471.64x = 90,351.48 × 37,177.92
  4. Step 4: Simplify right side
    65,471.64x = 3,359,080,095.32
  5. Step 5: Solve for x
    x = 3,359,080,095.32/65,471.64
  6. Step 6: Final answer
    x = 51,305.88

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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.