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Finding the Fourth Proportional to 19,762.32, 29,631.72 and 6,611.12

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Solution

The fourth proportional to 19,762.32, 29,631.72 and 6,611.12 is: 9,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.32 : 29,631.72 = 6,611.12 : x
  2. Step 2: Convert to fraction form
    19,762.32/29,631.72 = 6,611.12/x
  3. Step 3: Cross multiply
    19,762.32x = 29,631.72 × 6,611.12
  4. Step 4: Simplify right side
    19,762.32x = 195,898,856.73
  5. Step 5: Solve for x
    x = 195,898,856.73/19,762.32
  6. Step 6: Final answer
    x = 9,912.75

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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.