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Finding the Fourth Proportional to 966.24, 1,334.64 and 701.28

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Solution

The fourth proportional to 966.24, 1,334.64 and 701.28 is: 968.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.24 : 1,334.64 = 701.28 : x
  2. Step 2: Convert to fraction form
    966.24/1,334.64 = 701.28/x
  3. Step 3: Cross multiply
    966.24x = 1,334.64 × 701.28
  4. Step 4: Simplify right side
    966.24x = 935,956.34
  5. Step 5: Solve for x
    x = 935,956.34/966.24
  6. Step 6: Final answer
    x = 968.66

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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.