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Finding the Fourth Proportional to 61,176.87, 91,765.71 and 16,808.31

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Solution

The fourth proportional to 61,176.87, 91,765.71 and 16,808.31 is: 25,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,176.87 : 91,765.71 = 16,808.31 : x
  2. Step 2: Convert to fraction form
    61,176.87/91,765.71 = 16,808.31/x
  3. Step 3: Cross multiply
    61,176.87x = 91,765.71 × 16,808.31
  4. Step 4: Simplify right side
    61,176.87x = 1,542,426,501.05
  5. Step 5: Solve for x
    x = 1,542,426,501.05/61,176.87
  6. Step 6: Final answer
    x = 25,212.58

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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.