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Finding the Fourth Proportional to 19,967.44, 29,951.88 and 7,486.20

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Solution

The fourth proportional to 19,967.44, 29,951.88 and 7,486.20 is: 11,229.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,967.44 : 29,951.88 = 7,486.20 : x
  2. Step 2: Convert to fraction form
    19,967.44/29,951.88 = 7,486.20/x
  3. Step 3: Cross multiply
    19,967.44x = 29,951.88 × 7,486.20
  4. Step 4: Simplify right side
    19,967.44x = 224,225,764.06
  5. Step 5: Solve for x
    x = 224,225,764.06/19,967.44
  6. Step 6: Final answer
    x = 11,229.57

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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.