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Finding the Fourth Proportional to 18,170.83, 25,070.11 and 10,611.71

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Solution

The fourth proportional to 18,170.83, 25,070.11 and 10,611.71 is: 14,640.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,170.83 : 25,070.11 = 10,611.71 : x
  2. Step 2: Convert to fraction form
    18,170.83/25,070.11 = 10,611.71/x
  3. Step 3: Cross multiply
    18,170.83x = 25,070.11 × 10,611.71
  4. Step 4: Simplify right side
    18,170.83x = 266,036,683.93
  5. Step 5: Solve for x
    x = 266,036,683.93/18,170.83
  6. Step 6: Final answer
    x = 14,640.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.