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Finding the Fourth Proportional to 18,312.68, 27,437.62 and 12,297.48

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Solution

The fourth proportional to 18,312.68, 27,437.62 and 12,297.48 is: 18,425.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.68 : 27,437.62 = 12,297.48 : x
  2. Step 2: Convert to fraction form
    18,312.68/27,437.62 = 12,297.48/x
  3. Step 3: Cross multiply
    18,312.68x = 27,437.62 × 12,297.48
  4. Step 4: Simplify right side
    18,312.68x = 337,413,583.20
  5. Step 5: Solve for x
    x = 337,413,583.20/18,312.68
  6. Step 6: Final answer
    x = 18,425.13

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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.