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Finding the Fourth Proportional to 8,720.14, 12,033.54 and 4,943.65

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Solution

The fourth proportional to 8,720.14, 12,033.54 and 4,943.65 is: 6,822.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.14 : 12,033.54 = 4,943.65 : x
  2. Step 2: Convert to fraction form
    8,720.14/12,033.54 = 4,943.65/x
  3. Step 3: Cross multiply
    8,720.14x = 12,033.54 × 4,943.65
  4. Step 4: Simplify right side
    8,720.14x = 59,489,585.30
  5. Step 5: Solve for x
    x = 59,489,585.30/8,720.14
  6. Step 6: Final answer
    x = 6,822.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.