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Finding the Fourth Proportional to 404,811.78, 558,687.64 and 336,708.60

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Solution

The fourth proportional to 404,811.78, 558,687.64 and 336,708.60 is: 464,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,811.78 : 558,687.64 = 336,708.60 : x
  2. Step 2: Convert to fraction form
    404,811.78/558,687.64 = 336,708.60/x
  3. Step 3: Cross multiply
    404,811.78x = 558,687.64 × 336,708.60
  4. Step 4: Simplify right side
    404,811.78x = 188,114,933,101.70
  5. Step 5: Solve for x
    x = 188,114,933,101.70/404,811.78
  6. Step 6: Final answer
    x = 464,697.28

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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.