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Finding the Fourth Proportional to 12,115.92, 16,718.28 and 6,737.94

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Solution

The fourth proportional to 12,115.92, 16,718.28 and 6,737.94 is: 9,297.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.92 : 16,718.28 = 6,737.94 : x
  2. Step 2: Convert to fraction form
    12,115.92/16,718.28 = 6,737.94/x
  3. Step 3: Cross multiply
    12,115.92x = 16,718.28 × 6,737.94
  4. Step 4: Simplify right side
    12,115.92x = 112,646,767.54
  5. Step 5: Solve for x
    x = 112,646,767.54/12,115.92
  6. Step 6: Final answer
    x = 9,297.42

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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.