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Finding the Fourth Proportional to 15,611.16, 23,405.79 and 5,749.18

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Solution

The fourth proportional to 15,611.16, 23,405.79 and 5,749.18 is: 8,619.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.16 : 23,405.79 = 5,749.18 : x
  2. Step 2: Convert to fraction form
    15,611.16/23,405.79 = 5,749.18/x
  3. Step 3: Cross multiply
    15,611.16x = 23,405.79 × 5,749.18
  4. Step 4: Simplify right side
    15,611.16x = 134,563,982.72
  5. Step 5: Solve for x
    x = 134,563,982.72/15,611.16
  6. Step 6: Final answer
    x = 8,619.73

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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.