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Finding the Fourth Proportional to 1,167.92, 1,751.03 and 551.28

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Solution

The fourth proportional to 1,167.92, 1,751.03 and 551.28 is: 826.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.92 : 1,751.03 = 551.28 : x
  2. Step 2: Convert to fraction form
    1,167.92/1,751.03 = 551.28/x
  3. Step 3: Cross multiply
    1,167.92x = 1,751.03 × 551.28
  4. Step 4: Simplify right side
    1,167.92x = 965,307.82
  5. Step 5: Solve for x
    x = 965,307.82/1,167.92
  6. Step 6: Final answer
    x = 826.52

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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.