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Finding the Fourth Proportional to 17,967.12, 26,948.40 and 4,820.40

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Solution

The fourth proportional to 17,967.12, 26,948.40 and 4,820.40 is: 7,229.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,967.12 : 26,948.40 = 4,820.40 : x
  2. Step 2: Convert to fraction form
    17,967.12/26,948.40 = 4,820.40/x
  3. Step 3: Cross multiply
    17,967.12x = 26,948.40 × 4,820.40
  4. Step 4: Simplify right side
    17,967.12x = 129,902,067.36
  5. Step 5: Solve for x
    x = 129,902,067.36/17,967.12
  6. Step 6: Final answer
    x = 7,229.99

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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.