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Finding the Fourth Proportional to 69,321.72, 103,971.12 and 24,940.20

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Solution

The fourth proportional to 69,321.72, 103,971.12 and 24,940.20 is: 37,406.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,321.72 : 103,971.12 = 24,940.20 : x
  2. Step 2: Convert to fraction form
    69,321.72/103,971.12 = 24,940.20/x
  3. Step 3: Cross multiply
    69,321.72x = 103,971.12 × 24,940.20
  4. Step 4: Simplify right side
    69,321.72x = 2,593,060,527.02
  5. Step 5: Solve for x
    x = 2,593,060,527.02/69,321.72
  6. Step 6: Final answer
    x = 37,406.18

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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.