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Finding the Fourth Proportional to 80,719.93, 111,393.93 and 48,866.14

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Solution

The fourth proportional to 80,719.93, 111,393.93 and 48,866.14 is: 67,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,719.93 : 111,393.93 = 48,866.14 : x
  2. Step 2: Convert to fraction form
    80,719.93/111,393.93 = 48,866.14/x
  3. Step 3: Cross multiply
    80,719.93x = 111,393.93 × 48,866.14
  4. Step 4: Simplify right side
    80,719.93x = 5,443,391,378.53
  5. Step 5: Solve for x
    x = 5,443,391,378.53/80,719.93
  6. Step 6: Final answer
    x = 67,435.53

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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.