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Finding the Fourth Proportional to 18,967.86, 28,452.96 and 5,829.36

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Solution

The fourth proportional to 18,967.86, 28,452.96 and 5,829.36 is: 8,744.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,967.86 : 28,452.96 = 5,829.36 : x
  2. Step 2: Convert to fraction form
    18,967.86/28,452.96 = 5,829.36/x
  3. Step 3: Cross multiply
    18,967.86x = 28,452.96 × 5,829.36
  4. Step 4: Simplify right side
    18,967.86x = 165,862,546.91
  5. Step 5: Solve for x
    x = 165,862,546.91/18,967.86
  6. Step 6: Final answer
    x = 8,744.40

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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.