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Finding the Fourth Proportional to 61,731.42, 92,003.12 and 61,216.62

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Solution

The fourth proportional to 61,731.42, 92,003.12 and 61,216.62 is: 91,235.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,731.42 : 92,003.12 = 61,216.62 : x
  2. Step 2: Convert to fraction form
    61,731.42/92,003.12 = 61,216.62/x
  3. Step 3: Cross multiply
    61,731.42x = 92,003.12 × 61,216.62
  4. Step 4: Simplify right side
    61,731.42x = 5,632,119,729.77
  5. Step 5: Solve for x
    x = 5,632,119,729.77/61,731.42
  6. Step 6: Final answer
    x = 91,235.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.