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Finding the Fourth Proportional to 493,772.92, 681,133.76 and 401,990.96

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Solution

The fourth proportional to 493,772.92, 681,133.76 and 401,990.96 is: 554,525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,772.92 : 681,133.76 = 401,990.96 : x
  2. Step 2: Convert to fraction form
    493,772.92/681,133.76 = 401,990.96/x
  3. Step 3: Cross multiply
    493,772.92x = 681,133.76 × 401,990.96
  4. Step 4: Simplify right side
    493,772.92x = 273,809,614,070.81
  5. Step 5: Solve for x
    x = 273,809,614,070.81/493,772.92
  6. Step 6: Final answer
    x = 554,525.38

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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.