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Finding the Fourth Proportional to 19,777.92, 29,677.86 and 8,099.34

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Solution

The fourth proportional to 19,777.92, 29,677.86 and 8,099.34 is: 12,153.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.92 : 29,677.86 = 8,099.34 : x
  2. Step 2: Convert to fraction form
    19,777.92/29,677.86 = 8,099.34/x
  3. Step 3: Cross multiply
    19,777.92x = 29,677.86 × 8,099.34
  4. Step 4: Simplify right side
    19,777.92x = 240,371,078.61
  5. Step 5: Solve for x
    x = 240,371,078.61/19,777.92
  6. Step 6: Final answer
    x = 12,153.51

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1.5x scale

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.