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Finding the Fourth Proportional to 3,572.91, 4,929.12 and 2,080.08

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Solution

The fourth proportional to 3,572.91, 4,929.12 and 2,080.08 is: 2,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.91 : 4,929.12 = 2,080.08 : x
  2. Step 2: Convert to fraction form
    3,572.91/4,929.12 = 2,080.08/x
  3. Step 3: Cross multiply
    3,572.91x = 4,929.12 × 2,080.08
  4. Step 4: Simplify right side
    3,572.91x = 10,252,963.93
  5. Step 5: Solve for x
    x = 10,252,963.93/3,572.91
  6. Step 6: Final answer
    x = 2,869.64

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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.