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Finding the Fourth Proportional to 19,891.20, 29,837.88 and 6,039.12

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Solution

The fourth proportional to 19,891.20, 29,837.88 and 6,039.12 is: 9,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.20 : 29,837.88 = 6,039.12 : x
  2. Step 2: Convert to fraction form
    19,891.20/29,837.88 = 6,039.12/x
  3. Step 3: Cross multiply
    19,891.20x = 29,837.88 × 6,039.12
  4. Step 4: Simplify right side
    19,891.20x = 180,194,537.87
  5. Step 5: Solve for x
    x = 180,194,537.87/19,891.20
  6. Step 6: Final answer
    x = 9,059.01

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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.