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Finding the Fourth Proportional to 7,772.88, 11,660.58 and 3,092.88

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Solution

The fourth proportional to 7,772.88, 11,660.58 and 3,092.88 is: 4,639.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,772.88 : 11,660.58 = 3,092.88 : x
  2. Step 2: Convert to fraction form
    7,772.88/11,660.58 = 3,092.88/x
  3. Step 3: Cross multiply
    7,772.88x = 11,660.58 × 3,092.88
  4. Step 4: Simplify right side
    7,772.88x = 36,064,774.67
  5. Step 5: Solve for x
    x = 36,064,774.67/7,772.88
  6. Step 6: Final answer
    x = 4,639.82

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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.