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Finding the Fourth Proportional to 112,672.86, 155,488.95 and 62,371.86

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Solution

The fourth proportional to 112,672.86, 155,488.95 and 62,371.86 is: 86,073.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,672.86 : 155,488.95 = 62,371.86 : x
  2. Step 2: Convert to fraction form
    112,672.86/155,488.95 = 62,371.86/x
  3. Step 3: Cross multiply
    112,672.86x = 155,488.95 × 62,371.86
  4. Step 4: Simplify right side
    112,672.86x = 9,698,135,020.95
  5. Step 5: Solve for x
    x = 9,698,135,020.95/112,672.86
  6. Step 6: Final answer
    x = 86,073.39

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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.