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Finding the Fourth Proportional to 259,754.55, 389,654.01 and 91,260.24

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Solution

The fourth proportional to 259,754.55, 389,654.01 and 91,260.24 is: 136,898.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,754.55 : 389,654.01 = 91,260.24 : x
  2. Step 2: Convert to fraction form
    259,754.55/389,654.01 = 91,260.24/x
  3. Step 3: Cross multiply
    259,754.55x = 389,654.01 × 91,260.24
  4. Step 4: Simplify right side
    259,754.55x = 35,559,918,469.56
  5. Step 5: Solve for x
    x = 35,559,918,469.56/259,754.55
  6. Step 6: Final answer
    x = 136,898.15

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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.