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Finding the Fourth Proportional to 218,807.33, 328,181.82 and 61,022.57

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Solution

The fourth proportional to 218,807.33, 328,181.82 and 61,022.57 is: 91,525.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,807.33 : 328,181.82 = 61,022.57 : x
  2. Step 2: Convert to fraction form
    218,807.33/328,181.82 = 61,022.57/x
  3. Step 3: Cross multiply
    218,807.33x = 328,181.82 × 61,022.57
  4. Step 4: Simplify right side
    218,807.33x = 20,026,496,442.77
  5. Step 5: Solve for x
    x = 20,026,496,442.77/218,807.33
  6. Step 6: Final answer
    x = 91,525.71

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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.