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Finding the Fourth Proportional to 61,188.98, 91,782.38 and 16,815.56

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Solution

The fourth proportional to 61,188.98, 91,782.38 and 16,815.56 is: 25,223.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,188.98 : 91,782.38 = 16,815.56 : x
  2. Step 2: Convert to fraction form
    61,188.98/91,782.38 = 16,815.56/x
  3. Step 3: Cross multiply
    61,188.98x = 91,782.38 × 16,815.56
  4. Step 4: Simplify right side
    61,188.98x = 1,543,372,117.83
  5. Step 5: Solve for x
    x = 1,543,372,117.83/61,188.98
  6. Step 6: Final answer
    x = 25,223.04

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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.