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Finding the Fourth Proportional to 83,672.67, 115,456.67 and 49,218.98

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Solution

The fourth proportional to 83,672.67, 115,456.67 and 49,218.98 is: 67,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,672.67 : 115,456.67 = 49,218.98 : x
  2. Step 2: Convert to fraction form
    83,672.67/115,456.67 = 49,218.98/x
  3. Step 3: Cross multiply
    83,672.67x = 115,456.67 × 49,218.98
  4. Step 4: Simplify right side
    83,672.67x = 5,682,658,708.22
  5. Step 5: Solve for x
    x = 5,682,658,708.22/83,672.67
  6. Step 6: Final answer
    x = 67,915.35

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1.5x scale

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.