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Finding the Fourth Proportional to 488,620.74, 732,920.67 and 133,634.76

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Solution

The fourth proportional to 488,620.74, 732,920.67 and 133,634.76 is: 200,449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,620.74 : 732,920.67 = 133,634.76 : x
  2. Step 2: Convert to fraction form
    488,620.74/732,920.67 = 133,634.76/x
  3. Step 3: Cross multiply
    488,620.74x = 732,920.67 × 133,634.76
  4. Step 4: Simplify right side
    488,620.74x = 97,943,677,834.49
  5. Step 5: Solve for x
    x = 97,943,677,834.49/488,620.74
  6. Step 6: Final answer
    x = 200,449.28

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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.