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Finding the Fourth Proportional to 201,793.67, 278,475.59 and 111,149.89

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Solution

The fourth proportional to 201,793.67, 278,475.59 and 111,149.89 is: 153,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,793.67 : 278,475.59 = 111,149.89 : x
  2. Step 2: Convert to fraction form
    201,793.67/278,475.59 = 111,149.89/x
  3. Step 3: Cross multiply
    201,793.67x = 278,475.59 × 111,149.89
  4. Step 4: Simplify right side
    201,793.67x = 30,952,529,248.06
  5. Step 5: Solve for x
    x = 30,952,529,248.06/201,793.67
  6. Step 6: Final answer
    x = 153,387.02

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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.