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Finding the Fourth Proportional to 16,921.92, 25,375.08 and 7,055.30

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Solution

The fourth proportional to 16,921.92, 25,375.08 and 7,055.30 is: 10,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.92 : 25,375.08 = 7,055.30 : x
  2. Step 2: Convert to fraction form
    16,921.92/25,375.08 = 7,055.30/x
  3. Step 3: Cross multiply
    16,921.92x = 25,375.08 × 7,055.30
  4. Step 4: Simplify right side
    16,921.92x = 179,028,801.92
  5. Step 5: Solve for x
    x = 179,028,801.92/16,921.92
  6. Step 6: Final answer
    x = 10,579.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.