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Finding the Fourth Proportional to 65,864.68, 90,895.46 and 36,057.32

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Solution

The fourth proportional to 65,864.68, 90,895.46 and 36,057.32 is: 49,760.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,864.68 : 90,895.46 = 36,057.32 : x
  2. Step 2: Convert to fraction form
    65,864.68/90,895.46 = 36,057.32/x
  3. Step 3: Cross multiply
    65,864.68x = 90,895.46 × 36,057.32
  4. Step 4: Simplify right side
    65,864.68x = 3,277,446,687.77
  5. Step 5: Solve for x
    x = 3,277,446,687.77/65,864.68
  6. Step 6: Final answer
    x = 49,760.31

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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.