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Finding the Fourth Proportional to 681,277.16, 940,162.76 and 394,963.24

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Solution

The fourth proportional to 681,277.16, 940,162.76 and 394,963.24 is: 545,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,277.16 : 940,162.76 = 394,963.24 : x
  2. Step 2: Convert to fraction form
    681,277.16/940,162.76 = 394,963.24/x
  3. Step 3: Cross multiply
    681,277.16x = 940,162.76 × 394,963.24
  4. Step 4: Simplify right side
    681,277.16x = 371,329,729,816.94
  5. Step 5: Solve for x
    x = 371,329,729,816.94/681,277.16
  6. Step 6: Final answer
    x = 545,049.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.