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Finding the Fourth Proportional to 488,048.40, 731,489.40 and 251,269.20

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Solution

The fourth proportional to 488,048.40, 731,489.40 and 251,269.20 is: 376,603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,048.40 : 731,489.40 = 251,269.20 : x
  2. Step 2: Convert to fraction form
    488,048.40/731,489.40 = 251,269.20/x
  3. Step 3: Cross multiply
    488,048.40x = 731,489.40 × 251,269.20
  4. Step 4: Simplify right side
    488,048.40x = 183,800,756,346.48
  5. Step 5: Solve for x
    x = 183,800,756,346.48/488,048.40
  6. Step 6: Final answer
    x = 376,603.54

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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.