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Finding the Fourth Proportional to 403,428.40, 604,883.40 and 166,865.20

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Solution

The fourth proportional to 403,428.40, 604,883.40 and 166,865.20 is: 250,190.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,428.40 : 604,883.40 = 166,865.20 : x
  2. Step 2: Convert to fraction form
    403,428.40/604,883.40 = 166,865.20/x
  3. Step 3: Cross multiply
    403,428.40x = 604,883.40 × 166,865.20
  4. Step 4: Simplify right side
    403,428.40x = 100,933,989,517.68
  5. Step 5: Solve for x
    x = 100,933,989,517.68/403,428.40
  6. Step 6: Final answer
    x = 250,190.59

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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.