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Finding the Fourth Proportional to 12,229.40, 16,875.64 and 6,923.16

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Solution

The fourth proportional to 12,229.40, 16,875.64 and 6,923.16 is: 9,553.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.40 : 16,875.64 = 6,923.16 : x
  2. Step 2: Convert to fraction form
    12,229.40/16,875.64 = 6,923.16/x
  3. Step 3: Cross multiply
    12,229.40x = 16,875.64 × 6,923.16
  4. Step 4: Simplify right side
    12,229.40x = 116,832,755.82
  5. Step 5: Solve for x
    x = 116,832,755.82/12,229.40
  6. Step 6: Final answer
    x = 9,553.43

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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.