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Finding the Fourth Proportional to 65,008.64, 89,713.68 and 36,718.52

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Solution

The fourth proportional to 65,008.64, 89,713.68 and 36,718.52 is: 50,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,008.64 : 89,713.68 = 36,718.52 : x
  2. Step 2: Convert to fraction form
    65,008.64/89,713.68 = 36,718.52/x
  3. Step 3: Cross multiply
    65,008.64x = 89,713.68 × 36,718.52
  4. Step 4: Simplify right side
    65,008.64x = 3,294,153,553.35
  5. Step 5: Solve for x
    x = 3,294,153,553.35/65,008.64
  6. Step 6: Final answer
    x = 50,672.55

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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.