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Finding the Fourth Proportional to 14,616.65, 20,166.18 and 8,945.48

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Solution

The fourth proportional to 14,616.65, 20,166.18 and 8,945.48 is: 12,341.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.65 : 20,166.18 = 8,945.48 : x
  2. Step 2: Convert to fraction form
    14,616.65/20,166.18 = 8,945.48/x
  3. Step 3: Cross multiply
    14,616.65x = 20,166.18 × 8,945.48
  4. Step 4: Simplify right side
    14,616.65x = 180,396,059.04
  5. Step 5: Solve for x
    x = 180,396,059.04/14,616.65
  6. Step 6: Final answer
    x = 12,341.82

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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.