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Finding the Fourth Proportional to 403,405.20, 604,186.20 and 237,517.20

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Solution

The fourth proportional to 403,405.20, 604,186.20 and 237,517.20 is: 355,733.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,405.20 : 604,186.20 = 237,517.20 : x
  2. Step 2: Convert to fraction form
    403,405.20/604,186.20 = 237,517.20/x
  3. Step 3: Cross multiply
    403,405.20x = 604,186.20 × 237,517.20
  4. Step 4: Simplify right side
    403,405.20x = 143,504,614,502.64
  5. Step 5: Solve for x
    x = 143,504,614,502.64/403,405.20
  6. Step 6: Final answer
    x = 355,733.18

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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.