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Finding the Fourth Proportional to 58,512.73, 80,747.12 and 31,655.16

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Solution

The fourth proportional to 58,512.73, 80,747.12 and 31,655.16 is: 43,683.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,512.73 : 80,747.12 = 31,655.16 : x
  2. Step 2: Convert to fraction form
    58,512.73/80,747.12 = 31,655.16/x
  3. Step 3: Cross multiply
    58,512.73x = 80,747.12 × 31,655.16
  4. Step 4: Simplify right side
    58,512.73x = 2,556,062,643.00
  5. Step 5: Solve for x
    x = 2,556,062,643.00/58,512.73
  6. Step 6: Final answer
    x = 43,683.87

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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.