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Finding the Fourth Proportional to 62,079.78, 85,671.78 and 38,220.03

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Solution

The fourth proportional to 62,079.78, 85,671.78 and 38,220.03 is: 52,744.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,079.78 : 85,671.78 = 38,220.03 : x
  2. Step 2: Convert to fraction form
    62,079.78/85,671.78 = 38,220.03/x
  3. Step 3: Cross multiply
    62,079.78x = 85,671.78 × 38,220.03
  4. Step 4: Simplify right side
    62,079.78x = 3,274,378,001.75
  5. Step 5: Solve for x
    x = 3,274,378,001.75/62,079.78
  6. Step 6: Final answer
    x = 52,744.68

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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.