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Finding the Fourth Proportional to 968.16, 1,336.32 and 595.20

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Solution

The fourth proportional to 968.16, 1,336.32 and 595.20 is: 821.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.16 : 1,336.32 = 595.20 : x
  2. Step 2: Convert to fraction form
    968.16/1,336.32 = 595.20/x
  3. Step 3: Cross multiply
    968.16x = 1,336.32 × 595.20
  4. Step 4: Simplify right side
    968.16x = 795,377.66
  5. Step 5: Solve for x
    x = 795,377.66/968.16
  6. Step 6: Final answer
    x = 821.54

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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.