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Finding the Fourth Proportional to 325,116.60, 487,610.10 and 156,636.60

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Solution

The fourth proportional to 325,116.60, 487,610.10 and 156,636.60 is: 234,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,116.60 : 487,610.10 = 156,636.60 : x
  2. Step 2: Convert to fraction form
    325,116.60/487,610.10 = 156,636.60/x
  3. Step 3: Cross multiply
    325,116.60x = 487,610.10 × 156,636.60
  4. Step 4: Simplify right side
    325,116.60x = 76,377,588,189.66
  5. Step 5: Solve for x
    x = 76,377,588,189.66/325,116.60
  6. Step 6: Final answer
    x = 234,923.68

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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.