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Finding the Fourth Proportional to 22,418.70, 33,639.64 and 9,947.32

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Solution

The fourth proportional to 22,418.70, 33,639.64 and 9,947.32 is: 14,926.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.70 : 33,639.64 = 9,947.32 : x
  2. Step 2: Convert to fraction form
    22,418.70/33,639.64 = 9,947.32/x
  3. Step 3: Cross multiply
    22,418.70x = 33,639.64 × 9,947.32
  4. Step 4: Simplify right side
    22,418.70x = 334,624,263.76
  5. Step 5: Solve for x
    x = 334,624,263.76/22,418.70
  6. Step 6: Final answer
    x = 14,926.12

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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.