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Finding the Fourth Proportional to 403,780.20, 605,621.70 and 167,098.20

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Solution

The fourth proportional to 403,780.20, 605,621.70 and 167,098.20 is: 250,627.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,780.20 : 605,621.70 = 167,098.20 : x
  2. Step 2: Convert to fraction form
    403,780.20/605,621.70 = 167,098.20/x
  3. Step 3: Cross multiply
    403,780.20x = 605,621.70 × 167,098.20
  4. Step 4: Simplify right side
    403,780.20x = 101,198,295,950.94
  5. Step 5: Solve for x
    x = 101,198,295,950.94/403,780.20
  6. Step 6: Final answer
    x = 250,627.19

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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.