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Finding the Fourth Proportional to 517,134.72, 713,619.84 and 290,766.72

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Solution

The fourth proportional to 517,134.72, 713,619.84 and 290,766.72 is: 401,243.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,134.72 : 713,619.84 = 290,766.72 : x
  2. Step 2: Convert to fraction form
    517,134.72/713,619.84 = 290,766.72/x
  3. Step 3: Cross multiply
    517,134.72x = 713,619.84 × 290,766.72
  4. Step 4: Simplify right side
    517,134.72x = 207,496,900,203.73
  5. Step 5: Solve for x
    x = 207,496,900,203.73/517,134.72
  6. Step 6: Final answer
    x = 401,243.41

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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.