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Finding the Fourth Proportional to 403,426.40, 604,880.40 and 166,863.20

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Solution

The fourth proportional to 403,426.40, 604,880.40 and 166,863.20 is: 250,187.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,426.40 : 604,880.40 = 166,863.20 : x
  2. Step 2: Convert to fraction form
    403,426.40/604,880.40 = 166,863.20/x
  3. Step 3: Cross multiply
    403,426.40x = 604,880.40 × 166,863.20
  4. Step 4: Simplify right side
    403,426.40x = 100,932,279,161.28
  5. Step 5: Solve for x
    x = 100,932,279,161.28/403,426.40
  6. Step 6: Final answer
    x = 250,187.59

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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.