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Finding the Fourth Proportional to 699,933.60, 965,897.46 and 394,009.38

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Solution

The fourth proportional to 699,933.60, 965,897.46 and 394,009.38 is: 543,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,933.60 : 965,897.46 = 394,009.38 : x
  2. Step 2: Convert to fraction form
    699,933.60/965,897.46 = 394,009.38/x
  3. Step 3: Cross multiply
    699,933.60x = 965,897.46 × 394,009.38
  4. Step 4: Simplify right side
    699,933.60x = 380,572,659,358.18
  5. Step 5: Solve for x
    x = 380,572,659,358.18/699,933.60
  6. Step 6: Final answer
    x = 543,726.80

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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.