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Finding the Fourth Proportional to 625.64, 939.06 and 260.53

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Solution

The fourth proportional to 625.64, 939.06 and 260.53 is: 391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.64 : 939.06 = 260.53 : x
  2. Step 2: Convert to fraction form
    625.64/939.06 = 260.53/x
  3. Step 3: Cross multiply
    625.64x = 939.06 × 260.53
  4. Step 4: Simplify right side
    625.64x = 244,650.95
  5. Step 5: Solve for x
    x = 244,650.95/625.64
  6. Step 6: Final answer
    x = 391.04

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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.