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Finding the Fourth Proportional to 18,997.60, 26,160.72 and 13,023.04

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Solution

The fourth proportional to 18,997.60, 26,160.72 and 13,023.04 is: 17,933.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997.60 : 26,160.72 = 13,023.04 : x
  2. Step 2: Convert to fraction form
    18,997.60/26,160.72 = 13,023.04/x
  3. Step 3: Cross multiply
    18,997.60x = 26,160.72 × 13,023.04
  4. Step 4: Simplify right side
    18,997.60x = 340,692,102.99
  5. Step 5: Solve for x
    x = 340,692,102.99/18,997.60
  6. Step 6: Final answer
    x = 17,933.43

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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.