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Finding the Fourth Proportional to 83,859.87, 115,729.48 and 48,056.79

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Solution

The fourth proportional to 83,859.87, 115,729.48 and 48,056.79 is: 66,320.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,859.87 : 115,729.48 = 48,056.79 : x
  2. Step 2: Convert to fraction form
    83,859.87/115,729.48 = 48,056.79/x
  3. Step 3: Cross multiply
    83,859.87x = 115,729.48 × 48,056.79
  4. Step 4: Simplify right side
    83,859.87x = 5,561,587,317.17
  5. Step 5: Solve for x
    x = 5,561,587,317.17/83,859.87
  6. Step 6: Final answer
    x = 66,320.01

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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.