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Finding the Fourth Proportional to 22,395.90, 33,561.45 and 9,905.70

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Solution

The fourth proportional to 22,395.90, 33,561.45 and 9,905.70 is: 14,844.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,395.90 : 33,561.45 = 9,905.70 : x
  2. Step 2: Convert to fraction form
    22,395.90/33,561.45 = 9,905.70/x
  3. Step 3: Cross multiply
    22,395.90x = 33,561.45 × 9,905.70
  4. Step 4: Simplify right side
    22,395.90x = 332,449,655.27
  5. Step 5: Solve for x
    x = 332,449,655.27/22,395.90
  6. Step 6: Final answer
    x = 14,844.22

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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.