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Finding the Fourth Proportional to 112,615.52, 155,407.20 and 62,314.52

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Solution

The fourth proportional to 112,615.52, 155,407.20 and 62,314.52 is: 85,992.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,615.52 : 155,407.20 = 62,314.52 : x
  2. Step 2: Convert to fraction form
    112,615.52/155,407.20 = 62,314.52/x
  3. Step 3: Cross multiply
    112,615.52x = 155,407.20 × 62,314.52
  4. Step 4: Simplify right side
    112,615.52x = 9,684,125,072.54
  5. Step 5: Solve for x
    x = 9,684,125,072.54/112,615.52
  6. Step 6: Final answer
    x = 85,992.81

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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.