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Finding the Fourth Proportional to 8,784.74, 13,175.12 and 2,543.42

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Solution

The fourth proportional to 8,784.74, 13,175.12 and 2,543.42 is: 3,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.74 : 13,175.12 = 2,543.42 : x
  2. Step 2: Convert to fraction form
    8,784.74/13,175.12 = 2,543.42/x
  3. Step 3: Cross multiply
    8,784.74x = 13,175.12 × 2,543.42
  4. Step 4: Simplify right side
    8,784.74x = 33,509,863.71
  5. Step 5: Solve for x
    x = 33,509,863.71/8,784.74
  6. Step 6: Final answer
    x = 3,814.55

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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.