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Finding the Fourth Proportional to 18,572.90, 27,867.58 and 7,501.21

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Solution

The fourth proportional to 18,572.90, 27,867.58 and 7,501.21 is: 11,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.90 : 27,867.58 = 7,501.21 : x
  2. Step 2: Convert to fraction form
    18,572.90/27,867.58 = 7,501.21/x
  3. Step 3: Cross multiply
    18,572.90x = 27,867.58 × 7,501.21
  4. Step 4: Simplify right side
    18,572.90x = 209,040,481.35
  5. Step 5: Solve for x
    x = 209,040,481.35/18,572.90
  6. Step 6: Final answer
    x = 11,255.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.