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Finding the Fourth Proportional to 38,311.70, 57,358.20 and 37,218.20

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Solution

The fourth proportional to 38,311.70, 57,358.20 and 37,218.20 is: 55,721.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,311.70 : 57,358.20 = 37,218.20 : x
  2. Step 2: Convert to fraction form
    38,311.70/57,358.20 = 37,218.20/x
  3. Step 3: Cross multiply
    38,311.70x = 57,358.20 × 37,218.20
  4. Step 4: Simplify right side
    38,311.70x = 2,134,768,959.24
  5. Step 5: Solve for x
    x = 2,134,768,959.24/38,311.70
  6. Step 6: Final answer
    x = 55,721.07

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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.