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Finding the Fourth Proportional to 16,818, 23,209.56 and 9,366

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Solution

The fourth proportional to 16,818, 23,209.56 and 9,366 is: 12,925.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,818 : 23,209.56 = 9,366 : x
  2. Step 2: Convert to fraction form
    16,818/23,209.56 = 9,366/x
  3. Step 3: Cross multiply
    16,818x = 23,209.56 × 9,366
  4. Step 4: Simplify right side
    16,818x = 217,380,738.96
  5. Step 5: Solve for x
    x = 217,380,738.96/16,818
  6. Step 6: Final answer
    x = 12,925.48

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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.