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Finding the Fourth Proportional to 83,415.96, 115,112.88 and 47,626.92

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Solution

The fourth proportional to 83,415.96, 115,112.88 and 47,626.92 is: 65,724.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,415.96 : 115,112.88 = 47,626.92 : x
  2. Step 2: Convert to fraction form
    83,415.96/115,112.88 = 47,626.92/x
  3. Step 3: Cross multiply
    83,415.96x = 115,112.88 × 47,626.92
  4. Step 4: Simplify right side
    83,415.96x = 5,482,471,926.73
  5. Step 5: Solve for x
    x = 5,482,471,926.73/83,415.96
  6. Step 6: Final answer
    x = 65,724.50

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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.