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Finding the Fourth Proportional to 66,399.67, 91,631.55 and 36,184.98

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Solution

The fourth proportional to 66,399.67, 91,631.55 and 36,184.98 is: 49,935.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,399.67 : 91,631.55 = 36,184.98 : x
  2. Step 2: Convert to fraction form
    66,399.67/91,631.55 = 36,184.98/x
  3. Step 3: Cross multiply
    66,399.67x = 91,631.55 × 36,184.98
  4. Step 4: Simplify right side
    66,399.67x = 3,315,685,623.19
  5. Step 5: Solve for x
    x = 3,315,685,623.19/66,399.67
  6. Step 6: Final answer
    x = 49,935.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.