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Finding the Fourth Proportional to 16,318.76, 22,519.88 and 8,866.76

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Solution

The fourth proportional to 16,318.76, 22,519.88 and 8,866.76 is: 12,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,318.76 : 22,519.88 = 8,866.76 : x
  2. Step 2: Convert to fraction form
    16,318.76/22,519.88 = 8,866.76/x
  3. Step 3: Cross multiply
    16,318.76x = 22,519.88 × 8,866.76
  4. Step 4: Simplify right side
    16,318.76x = 199,678,371.19
  5. Step 5: Solve for x
    x = 199,678,371.19/16,318.76
  6. Step 6: Final answer
    x = 12,236.12

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Half scale
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Double scale
Find fourth proportional to 16,319.76, 22,521.26 and 8,867.76
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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.