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Finding the Fourth Proportional to 16,920.50, 25,389.92 and 7,060.64

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Solution

The fourth proportional to 16,920.50, 25,389.92 and 7,060.64 is: 10,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.50 : 25,389.92 = 7,060.64 : x
  2. Step 2: Convert to fraction form
    16,920.50/25,389.92 = 7,060.64/x
  3. Step 3: Cross multiply
    16,920.50x = 25,389.92 × 7,060.64
  4. Step 4: Simplify right side
    16,920.50x = 179,269,084.75
  5. Step 5: Solve for x
    x = 179,269,084.75/16,920.50
  6. Step 6: Final answer
    x = 10,594.79

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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.