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Finding the Fourth Proportional to 83,462.88, 115,218.69 and 47,645.97

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Solution

The fourth proportional to 83,462.88, 115,218.69 and 47,645.97 is: 65,774.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,462.88 : 115,218.69 = 47,645.97 : x
  2. Step 2: Convert to fraction form
    83,462.88/115,218.69 = 47,645.97/x
  3. Step 3: Cross multiply
    83,462.88x = 115,218.69 × 47,645.97
  4. Step 4: Simplify right side
    83,462.88x = 5,489,706,535.23
  5. Step 5: Solve for x
    x = 5,489,706,535.23/83,462.88
  6. Step 6: Final answer
    x = 65,774.23

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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.