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Finding the Fourth Proportional to 17,889.15, 24,685.92 and 9,930.90

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Solution

The fourth proportional to 17,889.15, 24,685.92 and 9,930.90 is: 13,704.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,889.15 : 24,685.92 = 9,930.90 : x
  2. Step 2: Convert to fraction form
    17,889.15/24,685.92 = 9,930.90/x
  3. Step 3: Cross multiply
    17,889.15x = 24,685.92 × 9,930.90
  4. Step 4: Simplify right side
    17,889.15x = 245,153,402.93
  5. Step 5: Solve for x
    x = 245,153,402.93/17,889.15
  6. Step 6: Final answer
    x = 13,704.03

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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.