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Finding the Fourth Proportional to 38,782.58, 58,173.89 and 11,080.58

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Solution

The fourth proportional to 38,782.58, 58,173.89 and 11,080.58 is: 16,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.58 : 58,173.89 = 11,080.58 : x
  2. Step 2: Convert to fraction form
    38,782.58/58,173.89 = 11,080.58/x
  3. Step 3: Cross multiply
    38,782.58x = 58,173.89 × 11,080.58
  4. Step 4: Simplify right side
    38,782.58x = 644,600,095.78
  5. Step 5: Solve for x
    x = 644,600,095.78/38,782.58
  6. Step 6: Final answer
    x = 16,620.87

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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.