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Finding the Fourth Proportional to 488,438.20, 732,743.70 and 173,078.20

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Solution

The fourth proportional to 488,438.20, 732,743.70 and 173,078.20 is: 259,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,438.20 : 732,743.70 = 173,078.20 : x
  2. Step 2: Convert to fraction form
    488,438.20/732,743.70 = 173,078.20/x
  3. Step 3: Cross multiply
    488,438.20x = 732,743.70 × 173,078.20
  4. Step 4: Simplify right side
    488,438.20x = 126,821,960,657.34
  5. Step 5: Solve for x
    x = 126,821,960,657.34/488,438.20
  6. Step 6: Final answer
    x = 259,647.92

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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.