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Finding the Fourth Proportional to 625,515.20, 938,733.60 and 251,806.40

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Solution

The fourth proportional to 625,515.20, 938,733.60 and 251,806.40 is: 377,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,515.20 : 938,733.60 = 251,806.40 : x
  2. Step 2: Convert to fraction form
    625,515.20/938,733.60 = 251,806.40/x
  3. Step 3: Cross multiply
    625,515.20x = 938,733.60 × 251,806.40
  4. Step 4: Simplify right side
    625,515.20x = 236,379,128,375.04
  5. Step 5: Solve for x
    x = 236,379,128,375.04/625,515.20
  6. Step 6: Final answer
    x = 377,895.10

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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.