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Finding the Fourth Proportional to 16,863.64, 23,258.88 and 12,897.88

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Solution

The fourth proportional to 16,863.64, 23,258.88 and 12,897.88 is: 17,789.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,863.64 : 23,258.88 = 12,897.88 : x
  2. Step 2: Convert to fraction form
    16,863.64/23,258.88 = 12,897.88/x
  3. Step 3: Cross multiply
    16,863.64x = 23,258.88 × 12,897.88
  4. Step 4: Simplify right side
    16,863.64x = 299,990,243.17
  5. Step 5: Solve for x
    x = 299,990,243.17/16,863.64
  6. Step 6: Final answer
    x = 17,789.18

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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.