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Finding the Fourth Proportional to 83,480.88, 125,181.68 and 48,431.28

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Solution

The fourth proportional to 83,480.88, 125,181.68 and 48,431.28 is: 72,623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,480.88 : 125,181.68 = 48,431.28 : x
  2. Step 2: Convert to fraction form
    83,480.88/125,181.68 = 48,431.28/x
  3. Step 3: Cross multiply
    83,480.88x = 125,181.68 × 48,431.28
  4. Step 4: Simplify right side
    83,480.88x = 6,062,708,994.95
  5. Step 5: Solve for x
    x = 6,062,708,994.95/83,480.88
  6. Step 6: Final answer
    x = 72,623.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.