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Finding the Fourth Proportional to 22,418.18, 33,611.54 and 9,931.42

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Solution

The fourth proportional to 22,418.18, 33,611.54 and 9,931.42 is: 14,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,418.18 : 33,611.54 = 9,931.42 : x
  2. Step 2: Convert to fraction form
    22,418.18/33,611.54 = 9,931.42/x
  3. Step 3: Cross multiply
    22,418.18x = 33,611.54 × 9,931.42
  4. Step 4: Simplify right side
    22,418.18x = 333,810,186.90
  5. Step 5: Solve for x
    x = 333,810,186.90/22,418.18
  6. Step 6: Final answer
    x = 14,890.16

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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.