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Finding the Fourth Proportional to 159,902.03, 220,661.48 and 91,917.25

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Solution

The fourth proportional to 159,902.03, 220,661.48 and 91,917.25 is: 126,843.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,902.03 : 220,661.48 = 91,917.25 : x
  2. Step 2: Convert to fraction form
    159,902.03/220,661.48 = 91,917.25/x
  3. Step 3: Cross multiply
    159,902.03x = 220,661.48 × 91,917.25
  4. Step 4: Simplify right side
    159,902.03x = 20,282,596,100.67
  5. Step 5: Solve for x
    x = 20,282,596,100.67/159,902.03
  6. Step 6: Final answer
    x = 126,843.89

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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.