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Finding the Fourth Proportional to 708.64, 1,062.03 and 338.32

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Solution

The fourth proportional to 708.64, 1,062.03 and 338.32 is: 507.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.64 : 1,062.03 = 338.32 : x
  2. Step 2: Convert to fraction form
    708.64/1,062.03 = 338.32/x
  3. Step 3: Cross multiply
    708.64x = 1,062.03 × 338.32
  4. Step 4: Simplify right side
    708.64x = 359,305.99
  5. Step 5: Solve for x
    x = 359,305.99/708.64
  6. Step 6: Final answer
    x = 507.04

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.