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Finding the Fourth Proportional to 625,885.40, 863,722.08 and 339,405.41

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Solution

The fourth proportional to 625,885.40, 863,722.08 and 339,405.41 is: 468,379.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,885.40 : 863,722.08 = 339,405.41 : x
  2. Step 2: Convert to fraction form
    625,885.40/863,722.08 = 339,405.41/x
  3. Step 3: Cross multiply
    625,885.40x = 863,722.08 × 339,405.41
  4. Step 4: Simplify right side
    625,885.40x = 293,151,943,034.74
  5. Step 5: Solve for x
    x = 293,151,943,034.74/625,885.40
  6. Step 6: Final answer
    x = 468,379.59

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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.