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Finding the Fourth Proportional to 7,992.40, 11,972.08 and 4,695.60

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Solution

The fourth proportional to 7,992.40, 11,972.08 and 4,695.60 is: 7,033.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.40 : 11,972.08 = 4,695.60 : x
  2. Step 2: Convert to fraction form
    7,992.40/11,972.08 = 4,695.60/x
  3. Step 3: Cross multiply
    7,992.40x = 11,972.08 × 4,695.60
  4. Step 4: Simplify right side
    7,992.40x = 56,216,098.85
  5. Step 5: Solve for x
    x = 56,216,098.85/7,992.40
  6. Step 6: Final answer
    x = 7,033.69

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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.