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Finding the Fourth Proportional to 386,596.20, 580,040.10 and 187,093.20

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Solution

The fourth proportional to 386,596.20, 580,040.10 and 187,093.20 is: 280,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,596.20 : 580,040.10 = 187,093.20 : x
  2. Step 2: Convert to fraction form
    386,596.20/580,040.10 = 187,093.20/x
  3. Step 3: Cross multiply
    386,596.20x = 580,040.10 × 187,093.20
  4. Step 4: Simplify right side
    386,596.20x = 108,521,558,437.32
  5. Step 5: Solve for x
    x = 108,521,558,437.32/386,596.20
  6. Step 6: Final answer
    x = 280,710.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.