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Finding the Fourth Proportional to 18,064.08, 24,930.72 and 10,990.08

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Solution

The fourth proportional to 18,064.08, 24,930.72 and 10,990.08 is: 15,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,064.08 : 24,930.72 = 10,990.08 : x
  2. Step 2: Convert to fraction form
    18,064.08/24,930.72 = 10,990.08/x
  3. Step 3: Cross multiply
    18,064.08x = 24,930.72 × 10,990.08
  4. Step 4: Simplify right side
    18,064.08x = 273,990,607.26
  5. Step 5: Solve for x
    x = 273,990,607.26/18,064.08
  6. Step 6: Final answer
    x = 15,167.70

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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.