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Finding the Fourth Proportional to 14,659.96, 20,211.14 and 12,132.76

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Solution

The fourth proportional to 14,659.96, 20,211.14 and 12,132.76 is: 16,726.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.96 : 20,211.14 = 12,132.76 : x
  2. Step 2: Convert to fraction form
    14,659.96/20,211.14 = 12,132.76/x
  3. Step 3: Cross multiply
    14,659.96x = 20,211.14 × 12,132.76
  4. Step 4: Simplify right side
    14,659.96x = 245,216,910.95
  5. Step 5: Solve for x
    x = 245,216,910.95/14,659.96
  6. Step 6: Final answer
    x = 16,726.98

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Half scale
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Double scale
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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.