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Finding the Fourth Proportional to 22,376.90, 30,879.84 and 16,659.90

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Solution

The fourth proportional to 22,376.90, 30,879.84 and 16,659.90 is: 22,990.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,376.90 : 30,879.84 = 16,659.90 : x
  2. Step 2: Convert to fraction form
    22,376.90/30,879.84 = 16,659.90/x
  3. Step 3: Cross multiply
    22,376.90x = 30,879.84 × 16,659.90
  4. Step 4: Simplify right side
    22,376.90x = 514,455,046.42
  5. Step 5: Solve for x
    x = 514,455,046.42/22,376.90
  6. Step 6: Final answer
    x = 22,990.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.