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Finding the Fourth Proportional to 518,770.26, 778,235.85 and 219,252.11

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Solution

The fourth proportional to 518,770.26, 778,235.85 and 219,252.11 is: 328,912.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,770.26 : 778,235.85 = 219,252.11 : x
  2. Step 2: Convert to fraction form
    518,770.26/778,235.85 = 219,252.11/x
  3. Step 3: Cross multiply
    518,770.26x = 778,235.85 × 219,252.11
  4. Step 4: Simplify right side
    518,770.26x = 170,629,848,298.96
  5. Step 5: Solve for x
    x = 170,629,848,298.96/518,770.26
  6. Step 6: Final answer
    x = 328,912.16

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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.