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Finding the Fourth Proportional to 403,398.80, 605,098.20 and 166,911.20

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Solution

The fourth proportional to 403,398.80, 605,098.20 and 166,911.20 is: 250,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,398.80 : 605,098.20 = 166,911.20 : x
  2. Step 2: Convert to fraction form
    403,398.80/605,098.20 = 166,911.20/x
  3. Step 3: Cross multiply
    403,398.80x = 605,098.20 × 166,911.20
  4. Step 4: Simplify right side
    403,398.80x = 100,997,666,679.84
  5. Step 5: Solve for x
    x = 100,997,666,679.84/403,398.80
  6. Step 6: Final answer
    x = 250,366.80

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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.