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Finding the Fourth Proportional to 16,921.68, 23,351.72 and 9,469.68

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Solution

The fourth proportional to 16,921.68, 23,351.72 and 9,469.68 is: 13,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.68 : 23,351.72 = 9,469.68 : x
  2. Step 2: Convert to fraction form
    16,921.68/23,351.72 = 9,469.68/x
  3. Step 3: Cross multiply
    16,921.68x = 23,351.72 × 9,469.68
  4. Step 4: Simplify right side
    16,921.68x = 221,133,315.85
  5. Step 5: Solve for x
    x = 221,133,315.85/16,921.68
  6. Step 6: Final answer
    x = 13,068.05

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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.