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Finding the Fourth Proportional to 73,410.57, 101,306.70 and 39,876.57

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Solution

The fourth proportional to 73,410.57, 101,306.70 and 39,876.57 is: 55,029.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,410.57 : 101,306.70 = 39,876.57 : x
  2. Step 2: Convert to fraction form
    73,410.57/101,306.70 = 39,876.57/x
  3. Step 3: Cross multiply
    73,410.57x = 101,306.70 × 39,876.57
  4. Step 4: Simplify right side
    73,410.57x = 4,039,763,714.02
  5. Step 5: Solve for x
    x = 4,039,763,714.02/73,410.57
  6. Step 6: Final answer
    x = 55,029.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.