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Finding the Fourth Proportional to 13,892.67, 19,169.19 and 7,924.19

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Solution

The fourth proportional to 13,892.67, 19,169.19 and 7,924.19 is: 10,933.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.67 : 19,169.19 = 7,924.19 : x
  2. Step 2: Convert to fraction form
    13,892.67/19,169.19 = 7,924.19/x
  3. Step 3: Cross multiply
    13,892.67x = 19,169.19 × 7,924.19
  4. Step 4: Simplify right side
    13,892.67x = 151,900,207.86
  5. Step 5: Solve for x
    x = 151,900,207.86/13,892.67
  6. Step 6: Final answer
    x = 10,933.84

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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.