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Finding the Fourth Proportional to 66,891.29, 100,333.15 and 18,863.01

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Solution

The fourth proportional to 66,891.29, 100,333.15 and 18,863.01 is: 28,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,891.29 : 100,333.15 = 18,863.01 : x
  2. Step 2: Convert to fraction form
    66,891.29/100,333.15 = 18,863.01/x
  3. Step 3: Cross multiply
    66,891.29x = 100,333.15 × 18,863.01
  4. Step 4: Simplify right side
    66,891.29x = 1,892,585,164.62
  5. Step 5: Solve for x
    x = 1,892,585,164.62/66,891.29
  6. Step 6: Final answer
    x = 28,293.45

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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.