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Finding the Fourth Proportional to 83,112.60, 124,665.70 and 27,708.60

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Solution

The fourth proportional to 83,112.60, 124,665.70 and 27,708.60 is: 41,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,112.60 : 124,665.70 = 27,708.60 : x
  2. Step 2: Convert to fraction form
    83,112.60/124,665.70 = 27,708.60/x
  3. Step 3: Cross multiply
    83,112.60x = 124,665.70 × 27,708.60
  4. Step 4: Simplify right side
    83,112.60x = 3,454,312,015.02
  5. Step 5: Solve for x
    x = 3,454,312,015.02/83,112.60
  6. Step 6: Final answer
    x = 41,561.83

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1.5x scale

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.