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Finding the Fourth Proportional to 2,175.64, 3,262.86 and 714.52

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Solution

The fourth proportional to 2,175.64, 3,262.86 and 714.52 is: 1,071.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.64 : 3,262.86 = 714.52 : x
  2. Step 2: Convert to fraction form
    2,175.64/3,262.86 = 714.52/x
  3. Step 3: Cross multiply
    2,175.64x = 3,262.86 × 714.52
  4. Step 4: Simplify right side
    2,175.64x = 2,331,378.73
  5. Step 5: Solve for x
    x = 2,331,378.73/2,175.64
  6. Step 6: Final answer
    x = 1,071.58

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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.