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Finding the Fourth Proportional to 14,719.49, 20,318.11 and 8,751.13

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Solution

The fourth proportional to 14,719.49, 20,318.11 and 8,751.13 is: 12,079.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,719.49 : 20,318.11 = 8,751.13 : x
  2. Step 2: Convert to fraction form
    14,719.49/20,318.11 = 8,751.13/x
  3. Step 3: Cross multiply
    14,719.49x = 20,318.11 × 8,751.13
  4. Step 4: Simplify right side
    14,719.49x = 177,806,436.61
  5. Step 5: Solve for x
    x = 177,806,436.61/14,719.49
  6. Step 6: Final answer
    x = 12,079.66

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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.