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Finding the Fourth Proportional to 336,998, 505,644.60 and 159,631.76

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Solution

The fourth proportional to 336,998, 505,644.60 and 159,631.76 is: 239,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,998 : 505,644.60 = 159,631.76 : x
  2. Step 2: Convert to fraction form
    336,998/505,644.60 = 159,631.76/x
  3. Step 3: Cross multiply
    336,998x = 505,644.60 × 159,631.76
  4. Step 4: Simplify right side
    336,998x = 80,716,937,432.50
  5. Step 5: Solve for x
    x = 80,716,937,432.50/336,998
  6. Step 6: Final answer
    x = 239,517.56

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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.