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Finding the Fourth Proportional to 18,984.08, 26,199.24 and 11,028.08

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Solution

The fourth proportional to 18,984.08, 26,199.24 and 11,028.08 is: 15,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.08 : 26,199.24 = 11,028.08 : x
  2. Step 2: Convert to fraction form
    18,984.08/26,199.24 = 11,028.08/x
  3. Step 3: Cross multiply
    18,984.08x = 26,199.24 × 11,028.08
  4. Step 4: Simplify right side
    18,984.08x = 288,927,314.66
  5. Step 5: Solve for x
    x = 288,927,314.66/18,984.08
  6. Step 6: Final answer
    x = 15,219.45

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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.