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Finding the Fourth Proportional to 83,840.70, 115,716.61 and 48,054.70

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Solution

The fourth proportional to 83,840.70, 115,716.61 and 48,054.70 is: 66,324.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,840.70 : 115,716.61 = 48,054.70 : x
  2. Step 2: Convert to fraction form
    83,840.70/115,716.61 = 48,054.70/x
  3. Step 3: Cross multiply
    83,840.70x = 115,716.61 × 48,054.70
  4. Step 4: Simplify right side
    83,840.70x = 5,560,726,978.57
  5. Step 5: Solve for x
    x = 5,560,726,978.57/83,840.70
  6. Step 6: Final answer
    x = 66,324.91

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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.