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Finding the Fourth Proportional to 86,851, 119,854.42 and 49,124.44

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Solution

The fourth proportional to 86,851, 119,854.42 and 49,124.44 is: 67,791.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,851 : 119,854.42 = 49,124.44 : x
  2. Step 2: Convert to fraction form
    86,851/119,854.42 = 49,124.44/x
  3. Step 3: Cross multiply
    86,851x = 119,854.42 × 49,124.44
  4. Step 4: Simplify right side
    86,851x = 5,887,781,264.02
  5. Step 5: Solve for x
    x = 5,887,781,264.02/86,851
  6. Step 6: Final answer
    x = 67,791.75

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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.