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Finding the Fourth Proportional to 904.24, 1,247.96 and 531.16

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Solution

The fourth proportional to 904.24, 1,247.96 and 531.16 is: 733.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    904.24 : 1,247.96 = 531.16 : x
  2. Step 2: Convert to fraction form
    904.24/1,247.96 = 531.16/x
  3. Step 3: Cross multiply
    904.24x = 1,247.96 × 531.16
  4. Step 4: Simplify right side
    904.24x = 662,866.43
  5. Step 5: Solve for x
    x = 662,866.43/904.24
  6. Step 6: Final answer
    x = 733.06

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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.