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Finding the Fourth Proportional to 15,998.48, 23,998.20 and 5,613.20

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Solution

The fourth proportional to 15,998.48, 23,998.20 and 5,613.20 is: 8,419.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,998.48 : 23,998.20 = 5,613.20 : x
  2. Step 2: Convert to fraction form
    15,998.48/23,998.20 = 5,613.20/x
  3. Step 3: Cross multiply
    15,998.48x = 23,998.20 × 5,613.20
  4. Step 4: Simplify right side
    15,998.48x = 134,706,696.24
  5. Step 5: Solve for x
    x = 134,706,696.24/15,998.48
  6. Step 6: Final answer
    x = 8,419.97

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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.