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Finding the Fourth Proportional to 681,271.41, 940,154.83 and 394,957.49

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Solution

The fourth proportional to 681,271.41, 940,154.83 and 394,957.49 is: 545,041.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,271.41 : 940,154.83 = 394,957.49 : x
  2. Step 2: Convert to fraction form
    681,271.41/940,154.83 = 394,957.49/x
  3. Step 3: Cross multiply
    681,271.41x = 940,154.83 × 394,957.49
  4. Step 4: Simplify right side
    681,271.41x = 371,321,189,893.39
  5. Step 5: Solve for x
    x = 371,321,189,893.39/681,271.41
  6. Step 6: Final answer
    x = 545,041.50

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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.