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Finding the Fourth Proportional to 526,969.36, 727,217.11 and 285,251.87

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Solution

The fourth proportional to 526,969.36, 727,217.11 and 285,251.87 is: 393,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,969.36 : 727,217.11 = 285,251.87 : x
  2. Step 2: Convert to fraction form
    526,969.36/727,217.11 = 285,251.87/x
  3. Step 3: Cross multiply
    526,969.36x = 727,217.11 × 285,251.87
  4. Step 4: Simplify right side
    526,969.36x = 207,440,036,174.28
  5. Step 5: Solve for x
    x = 207,440,036,174.28/526,969.36
  6. Step 6: Final answer
    x = 393,647.25

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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.