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Finding the Fourth Proportional to 66,924.96, 100,396.88 and 20,181.44

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Solution

The fourth proportional to 66,924.96, 100,396.88 and 20,181.44 is: 30,275.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,924.96 : 100,396.88 = 20,181.44 : x
  2. Step 2: Convert to fraction form
    66,924.96/100,396.88 = 20,181.44/x
  3. Step 3: Cross multiply
    66,924.96x = 100,396.88 × 20,181.44
  4. Step 4: Simplify right side
    66,924.96x = 2,026,153,609.91
  5. Step 5: Solve for x
    x = 2,026,153,609.91/66,924.96
  6. Step 6: Final answer
    x = 30,275.01

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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.