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Finding the Fourth Proportional to 61,216.60, 91,808.70 and 19,096.60

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Solution

The fourth proportional to 61,216.60, 91,808.70 and 19,096.60 is: 28,639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,216.60 : 91,808.70 = 19,096.60 : x
  2. Step 2: Convert to fraction form
    61,216.60/91,808.70 = 19,096.60/x
  3. Step 3: Cross multiply
    61,216.60x = 91,808.70 × 19,096.60
  4. Step 4: Simplify right side
    61,216.60x = 1,753,234,020.42
  5. Step 5: Solve for x
    x = 1,753,234,020.42/61,216.60
  6. Step 6: Final answer
    x = 28,639.85

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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.