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Finding the Fourth Proportional to 60,980.66, 91,469.21 and 16,607.78

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Solution

The fourth proportional to 60,980.66, 91,469.21 and 16,607.78 is: 24,911.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,980.66 : 91,469.21 = 16,607.78 : x
  2. Step 2: Convert to fraction form
    60,980.66/91,469.21 = 16,607.78/x
  3. Step 3: Cross multiply
    60,980.66x = 91,469.21 × 16,607.78
  4. Step 4: Simplify right side
    60,980.66x = 1,519,100,516.45
  5. Step 5: Solve for x
    x = 1,519,100,516.45/60,980.66
  6. Step 6: Final answer
    x = 24,911.19

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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.