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Finding the Fourth Proportional to 19,762.75, 29,636.99 and 6,612.05

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Solution

The fourth proportional to 19,762.75, 29,636.99 and 6,612.05 is: 9,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,762.75 : 29,636.99 = 6,612.05 : x
  2. Step 2: Convert to fraction form
    19,762.75/29,636.99 = 6,612.05/x
  3. Step 3: Cross multiply
    19,762.75x = 29,636.99 × 6,612.05
  4. Step 4: Simplify right side
    19,762.75x = 195,961,158.85
  5. Step 5: Solve for x
    x = 195,961,158.85/19,762.75
  6. Step 6: Final answer
    x = 9,915.68

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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.