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Finding the Fourth Proportional to 691,716.01, 954,405.57 and 419,777.77

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Solution

The fourth proportional to 691,716.01, 954,405.57 and 419,777.77 is: 579,194.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,716.01 : 954,405.57 = 419,777.77 : x
  2. Step 2: Convert to fraction form
    691,716.01/954,405.57 = 419,777.77/x
  3. Step 3: Cross multiply
    691,716.01x = 954,405.57 × 419,777.77
  4. Step 4: Simplify right side
    691,716.01x = 400,638,241,850.18
  5. Step 5: Solve for x
    x = 400,638,241,850.18/691,716.01
  6. Step 6: Final answer
    x = 579,194.69

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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.