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Finding the Fourth Proportional to 83,619.30, 115,375.68 and 47,803.53

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Solution

The fourth proportional to 83,619.30, 115,375.68 and 47,803.53 is: 65,958.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,619.30 : 115,375.68 = 47,803.53 : x
  2. Step 2: Convert to fraction form
    83,619.30/115,375.68 = 47,803.53/x
  3. Step 3: Cross multiply
    83,619.30x = 115,375.68 × 47,803.53
  4. Step 4: Simplify right side
    83,619.30x = 5,515,364,780.15
  5. Step 5: Solve for x
    x = 5,515,364,780.15/83,619.30
  6. Step 6: Final answer
    x = 65,958.04

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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.