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Finding the Fourth Proportional to 66,785.61, 100,161.95 and 22,411.38

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Solution

The fourth proportional to 66,785.61, 100,161.95 and 22,411.38 is: 33,611.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,785.61 : 100,161.95 = 22,411.38 : x
  2. Step 2: Convert to fraction form
    66,785.61/100,161.95 = 22,411.38/x
  3. Step 3: Cross multiply
    66,785.61x = 100,161.95 × 22,411.38
  4. Step 4: Simplify right side
    66,785.61x = 2,244,767,410.93
  5. Step 5: Solve for x
    x = 2,244,767,410.93/66,785.61
  6. Step 6: Final answer
    x = 33,611.54

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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.