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Finding the Fourth Proportional to 18,297.68, 25,251 and 9,914.20

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Solution

The fourth proportional to 18,297.68, 25,251 and 9,914.20 is: 13,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,297.68 : 25,251 = 9,914.20 : x
  2. Step 2: Convert to fraction form
    18,297.68/25,251 = 9,914.20/x
  3. Step 3: Cross multiply
    18,297.68x = 25,251 × 9,914.20
  4. Step 4: Simplify right side
    18,297.68x = 250,343,464.20
  5. Step 5: Solve for x
    x = 250,343,464.20/18,297.68
  6. Step 6: Final answer
    x = 13,681.71

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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.