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Finding the Fourth Proportional to 65,195.99, 89,976.17 and 36,515.20

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Solution

The fourth proportional to 65,195.99, 89,976.17 and 36,515.20 is: 50,394.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,195.99 : 89,976.17 = 36,515.20 : x
  2. Step 2: Convert to fraction form
    65,195.99/89,976.17 = 36,515.20/x
  3. Step 3: Cross multiply
    65,195.99x = 89,976.17 × 36,515.20
  4. Step 4: Simplify right side
    65,195.99x = 3,285,497,842.78
  5. Step 5: Solve for x
    x = 3,285,497,842.78/65,195.99
  6. Step 6: Final answer
    x = 50,394.17

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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.