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Finding the Fourth Proportional to 83,718.62, 125,574.68 and 28,314.62

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Solution

The fourth proportional to 83,718.62, 125,574.68 and 28,314.62 is: 42,470.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,718.62 : 125,574.68 = 28,314.62 : x
  2. Step 2: Convert to fraction form
    83,718.62/125,574.68 = 28,314.62/x
  3. Step 3: Cross multiply
    83,718.62x = 125,574.68 × 28,314.62
  4. Step 4: Simplify right side
    83,718.62x = 3,555,599,345.82
  5. Step 5: Solve for x
    x = 3,555,599,345.82/83,718.62
  6. Step 6: Final answer
    x = 42,470.83

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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.