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Finding the Fourth Proportional to 203,792.60, 305,688.90 and 132,933.80

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Solution

The fourth proportional to 203,792.60, 305,688.90 and 132,933.80 is: 199,400.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,792.60 : 305,688.90 = 132,933.80 : x
  2. Step 2: Convert to fraction form
    203,792.60/305,688.90 = 132,933.80/x
  3. Step 3: Cross multiply
    203,792.60x = 305,688.90 × 132,933.80
  4. Step 4: Simplify right side
    203,792.60x = 40,636,387,094.82
  5. Step 5: Solve for x
    x = 40,636,387,094.82/203,792.60
  6. Step 6: Final answer
    x = 199,400.70

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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.