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Finding the Fourth Proportional to 356,942.67, 535,356.45 and 104,163.81

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Solution

The fourth proportional to 356,942.67, 535,356.45 and 104,163.81 is: 156,228.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,942.67 : 535,356.45 = 104,163.81 : x
  2. Step 2: Convert to fraction form
    356,942.67/535,356.45 = 104,163.81/x
  3. Step 3: Cross multiply
    356,942.67x = 535,356.45 × 104,163.81
  4. Step 4: Simplify right side
    356,942.67x = 55,764,767,540.07
  5. Step 5: Solve for x
    x = 55,764,767,540.07/356,942.67
  6. Step 6: Final answer
    x = 156,228.92

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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.