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Finding the Fourth Proportional to 11,520.44, 15,907.44 and 7,489.26

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Solution

The fourth proportional to 11,520.44, 15,907.44 and 7,489.26 is: 10,341.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.44 : 15,907.44 = 7,489.26 : x
  2. Step 2: Convert to fraction form
    11,520.44/15,907.44 = 7,489.26/x
  3. Step 3: Cross multiply
    11,520.44x = 15,907.44 × 7,489.26
  4. Step 4: Simplify right side
    11,520.44x = 119,134,954.09
  5. Step 5: Solve for x
    x = 119,134,954.09/11,520.44
  6. Step 6: Final answer
    x = 10,341.18

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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.