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Finding the Fourth Proportional to 681,062.92, 939,866.83 and 394,749.08

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Solution

The fourth proportional to 681,062.92, 939,866.83 and 394,749.08 is: 544,753.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,062.92 : 939,866.83 = 394,749.08 : x
  2. Step 2: Convert to fraction form
    681,062.92/939,866.83 = 394,749.08/x
  3. Step 3: Cross multiply
    681,062.92x = 939,866.83 × 394,749.08
  4. Step 4: Simplify right side
    681,062.92x = 371,011,566,465.02
  5. Step 5: Solve for x
    x = 371,011,566,465.02/681,062.92
  6. Step 6: Final answer
    x = 544,753.73

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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.