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Finding the Fourth Proportional to 18,820.95, 25,975.08 and 11,267.27

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Solution

The fourth proportional to 18,820.95, 25,975.08 and 11,267.27 is: 15,550.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.95 : 25,975.08 = 11,267.27 : x
  2. Step 2: Convert to fraction form
    18,820.95/25,975.08 = 11,267.27/x
  3. Step 3: Cross multiply
    18,820.95x = 25,975.08 × 11,267.27
  4. Step 4: Simplify right side
    18,820.95x = 292,668,262.32
  5. Step 5: Solve for x
    x = 292,668,262.32/18,820.95
  6. Step 6: Final answer
    x = 15,550.14

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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.