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Finding the Fourth Proportional to 15,751.81, 23,630.11 and 5,361.13

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Solution

The fourth proportional to 15,751.81, 23,630.11 and 5,361.13 is: 8,042.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,751.81 : 23,630.11 = 5,361.13 : x
  2. Step 2: Convert to fraction form
    15,751.81/23,630.11 = 5,361.13/x
  3. Step 3: Cross multiply
    15,751.81x = 23,630.11 × 5,361.13
  4. Step 4: Simplify right side
    15,751.81x = 126,684,019.15
  5. Step 5: Solve for x
    x = 126,684,019.15/15,751.81
  6. Step 6: Final answer
    x = 8,042.51

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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.