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Finding the Fourth Proportional to 14,713.99, 20,306.17 and 8,340.84

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Solution

The fourth proportional to 14,713.99, 20,306.17 and 8,340.84 is: 11,510.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,713.99 : 20,306.17 = 8,340.84 : x
  2. Step 2: Convert to fraction form
    14,713.99/20,306.17 = 8,340.84/x
  3. Step 3: Cross multiply
    14,713.99x = 20,306.17 × 8,340.84
  4. Step 4: Simplify right side
    14,713.99x = 169,370,525.41
  5. Step 5: Solve for x
    x = 169,370,525.41/14,713.99
  6. Step 6: Final answer
    x = 11,510.85

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Half scale
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Double scale
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Similar ratio
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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.