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Finding the Fourth Proportional to 83,185.88, 114,801.18 and 54,871.52

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Solution

The fourth proportional to 83,185.88, 114,801.18 and 54,871.52 is: 75,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,185.88 : 114,801.18 = 54,871.52 : x
  2. Step 2: Convert to fraction form
    83,185.88/114,801.18 = 54,871.52/x
  3. Step 3: Cross multiply
    83,185.88x = 114,801.18 × 54,871.52
  4. Step 4: Simplify right side
    83,185.88x = 6,299,315,244.39
  5. Step 5: Solve for x
    x = 6,299,315,244.39/83,185.88
  6. Step 6: Final answer
    x = 75,725.78

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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.