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Finding the Fourth Proportional to 18,109.90, 24,991.62 and 11,036.30

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Solution

The fourth proportional to 18,109.90, 24,991.62 and 11,036.30 is: 15,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.90 : 24,991.62 = 11,036.30 : x
  2. Step 2: Convert to fraction form
    18,109.90/24,991.62 = 11,036.30/x
  3. Step 3: Cross multiply
    18,109.90x = 24,991.62 × 11,036.30
  4. Step 4: Simplify right side
    18,109.90x = 275,815,015.81
  5. Step 5: Solve for x
    x = 275,815,015.81/18,109.90
  6. Step 6: Final answer
    x = 15,230.07

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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.