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Finding the Fourth Proportional to 38,138.70, 57,208.05 and 35,546.70

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Solution

The fourth proportional to 38,138.70, 57,208.05 and 35,546.70 is: 53,320.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,138.70 : 57,208.05 = 35,546.70 : x
  2. Step 2: Convert to fraction form
    38,138.70/57,208.05 = 35,546.70/x
  3. Step 3: Cross multiply
    38,138.70x = 57,208.05 × 35,546.70
  4. Step 4: Simplify right side
    38,138.70x = 2,033,557,390.94
  5. Step 5: Solve for x
    x = 2,033,557,390.94/38,138.70
  6. Step 6: Final answer
    x = 53,320.05

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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.