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Finding the Fourth Proportional to 38,542.80, 57,857.40 and 29,816.40

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Solution

The fourth proportional to 38,542.80, 57,857.40 and 29,816.40 is: 44,758.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,542.80 : 57,857.40 = 29,816.40 : x
  2. Step 2: Convert to fraction form
    38,542.80/57,857.40 = 29,816.40/x
  3. Step 3: Cross multiply
    38,542.80x = 57,857.40 × 29,816.40
  4. Step 4: Simplify right side
    38,542.80x = 1,725,099,381.36
  5. Step 5: Solve for x
    x = 1,725,099,381.36/38,542.80
  6. Step 6: Final answer
    x = 44,758.02

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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.