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Finding the Fourth Proportional to 12,089.66, 16,660.49 and 8,726.13

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Solution

The fourth proportional to 12,089.66, 16,660.49 and 8,726.13 is: 12,025.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.66 : 16,660.49 = 8,726.13 : x
  2. Step 2: Convert to fraction form
    12,089.66/16,660.49 = 8,726.13/x
  3. Step 3: Cross multiply
    12,089.66x = 16,660.49 × 8,726.13
  4. Step 4: Simplify right side
    12,089.66x = 145,381,557.97
  5. Step 5: Solve for x
    x = 145,381,557.97/12,089.66
  6. Step 6: Final answer
    x = 12,025.29

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Half scale
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Double scale
Find fourth proportional to 12,090.66, 16,661.86 and 8,727.13
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.