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Finding the Fourth Proportional to 922.11, 1,272.63 and 700.68

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Solution

The fourth proportional to 922.11, 1,272.63 and 700.68 is: 967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.11 : 1,272.63 = 700.68 : x
  2. Step 2: Convert to fraction form
    922.11/1,272.63 = 700.68/x
  3. Step 3: Cross multiply
    922.11x = 1,272.63 × 700.68
  4. Step 4: Simplify right side
    922.11x = 891,706.39
  5. Step 5: Solve for x
    x = 891,706.39/922.11
  6. Step 6: Final answer
    x = 967.03

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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.