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Finding the Fourth Proportional to 22,643.70, 33,965.55 and 7,847.70

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Solution

The fourth proportional to 22,643.70, 33,965.55 and 7,847.70 is: 11,771.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,643.70 : 33,965.55 = 7,847.70 : x
  2. Step 2: Convert to fraction form
    22,643.70/33,965.55 = 7,847.70/x
  3. Step 3: Cross multiply
    22,643.70x = 33,965.55 × 7,847.70
  4. Step 4: Simplify right side
    22,643.70x = 266,551,446.74
  5. Step 5: Solve for x
    x = 266,551,446.74/22,643.70
  6. Step 6: Final answer
    x = 11,771.55

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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.