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Finding the Fourth Proportional to 520,231.52, 717,977.78 and 293,891.60

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Solution

The fourth proportional to 520,231.52, 717,977.78 and 293,891.60 is: 405,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,231.52 : 717,977.78 = 293,891.60 : x
  2. Step 2: Convert to fraction form
    520,231.52/717,977.78 = 293,891.60/x
  3. Step 3: Cross multiply
    520,231.52x = 717,977.78 × 293,891.60
  4. Step 4: Simplify right side
    520,231.52x = 211,007,638,528.65
  5. Step 5: Solve for x
    x = 211,007,638,528.65/520,231.52
  6. Step 6: Final answer
    x = 405,603.33

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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.