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Finding the Fourth Proportional to 122,747.67, 184,121.51 and 38,520.83

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Solution

The fourth proportional to 122,747.67, 184,121.51 and 38,520.83 is: 57,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,747.67 : 184,121.51 = 38,520.83 : x
  2. Step 2: Convert to fraction form
    122,747.67/184,121.51 = 38,520.83/x
  3. Step 3: Cross multiply
    122,747.67x = 184,121.51 × 38,520.83
  4. Step 4: Simplify right side
    122,747.67x = 7,092,513,653.75
  5. Step 5: Solve for x
    x = 7,092,513,653.75/122,747.67
  6. Step 6: Final answer
    x = 57,781.25

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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.