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Finding the Fourth Proportional to 19,757.71, 29,639.29 and 8,068.20

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Solution

The fourth proportional to 19,757.71, 29,639.29 and 8,068.20 is: 12,103.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,757.71 : 29,639.29 = 8,068.20 : x
  2. Step 2: Convert to fraction form
    19,757.71/29,639.29 = 8,068.20/x
  3. Step 3: Cross multiply
    19,757.71x = 29,639.29 × 8,068.20
  4. Step 4: Simplify right side
    19,757.71x = 239,135,551.21
  5. Step 5: Solve for x
    x = 239,135,551.21/19,757.71
  6. Step 6: Final answer
    x = 12,103.40

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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.