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Finding the Fourth Proportional to 493,777.04, 681,705.97 and 312,644.23

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Solution

The fourth proportional to 493,777.04, 681,705.97 and 312,644.23 is: 431,634.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,777.04 : 681,705.97 = 312,644.23 : x
  2. Step 2: Convert to fraction form
    493,777.04/681,705.97 = 312,644.23/x
  3. Step 3: Cross multiply
    493,777.04x = 681,705.97 × 312,644.23
  4. Step 4: Simplify right side
    493,777.04x = 213,131,435,591.18
  5. Step 5: Solve for x
    x = 213,131,435,591.18/493,777.04
  6. Step 6: Final answer
    x = 431,634.97

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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.