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Finding the Fourth Proportional to 356,678.38, 535,087.32 and 132,040.66

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Solution

The fourth proportional to 356,678.38, 535,087.32 and 132,040.66 is: 198,086.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,678.38 : 535,087.32 = 132,040.66 : x
  2. Step 2: Convert to fraction form
    356,678.38/535,087.32 = 132,040.66/x
  3. Step 3: Cross multiply
    356,678.38x = 535,087.32 × 132,040.66
  4. Step 4: Simplify right side
    356,678.38x = 70,653,282,890.43
  5. Step 5: Solve for x
    x = 70,653,282,890.43/356,678.38
  6. Step 6: Final answer
    x = 198,086.81

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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.