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Finding the Fourth Proportional to 625,764.84, 863,311.25 and 408,229.25

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Solution

The fourth proportional to 625,764.84, 863,311.25 and 408,229.25 is: 563,197.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,764.84 : 863,311.25 = 408,229.25 : x
  2. Step 2: Convert to fraction form
    625,764.84/863,311.25 = 408,229.25/x
  3. Step 3: Cross multiply
    625,764.84x = 863,311.25 × 408,229.25
  4. Step 4: Simplify right side
    625,764.84x = 352,428,900,808.08
  5. Step 5: Solve for x
    x = 352,428,900,808.08/625,764.84
  6. Step 6: Final answer
    x = 563,197.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.