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Finding the Fourth Proportional to 403,948.80, 605,923.20 and 167,212.80

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Solution

The fourth proportional to 403,948.80, 605,923.20 and 167,212.80 is: 250,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,948.80 : 605,923.20 = 167,212.80 : x
  2. Step 2: Convert to fraction form
    403,948.80/605,923.20 = 167,212.80/x
  3. Step 3: Cross multiply
    403,948.80x = 605,923.20 × 167,212.80
  4. Step 4: Simplify right side
    403,948.80x = 101,318,114,856.96
  5. Step 5: Solve for x
    x = 101,318,114,856.96/403,948.80
  6. Step 6: Final answer
    x = 250,819.20

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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.