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Finding the Fourth Proportional to 13,892.87, 19,171.66 and 7,926.44

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Solution

The fourth proportional to 13,892.87, 19,171.66 and 7,926.44 is: 10,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.87 : 19,171.66 = 7,926.44 : x
  2. Step 2: Convert to fraction form
    13,892.87/19,171.66 = 7,926.44/x
  3. Step 3: Cross multiply
    13,892.87x = 19,171.66 × 7,926.44
  4. Step 4: Simplify right side
    13,892.87x = 151,963,012.69
  5. Step 5: Solve for x
    x = 151,963,012.69/13,892.87
  6. Step 6: Final answer
    x = 10,938.20

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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.