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Finding the Fourth Proportional to 356,391.75, 534,523.05 and 143,151.06

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Solution

The fourth proportional to 356,391.75, 534,523.05 and 143,151.06 is: 214,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,391.75 : 534,523.05 = 143,151.06 : x
  2. Step 2: Convert to fraction form
    356,391.75/534,523.05 = 143,151.06/x
  3. Step 3: Cross multiply
    356,391.75x = 534,523.05 × 143,151.06
  4. Step 4: Simplify right side
    356,391.75x = 76,517,541,201.93
  5. Step 5: Solve for x
    x = 76,517,541,201.93/356,391.75
  6. Step 6: Final answer
    x = 214,700.65

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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.