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Finding the Fourth Proportional to 38,782.75, 58,174.13 and 11,080.75

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Solution

The fourth proportional to 38,782.75, 58,174.13 and 11,080.75 is: 16,621.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.75 : 58,174.13 = 11,080.75 : x
  2. Step 2: Convert to fraction form
    38,782.75/58,174.13 = 11,080.75/x
  3. Step 3: Cross multiply
    38,782.75x = 58,174.13 × 11,080.75
  4. Step 4: Simplify right side
    38,782.75x = 644,612,991.00
  5. Step 5: Solve for x
    x = 644,612,991.00/38,782.75
  6. Step 6: Final answer
    x = 16,621.13

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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.