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Finding the Fourth Proportional to 956.16, 1,434.24 and 626.24

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Solution

The fourth proportional to 956.16, 1,434.24 and 626.24 is: 939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.16 : 1,434.24 = 626.24 : x
  2. Step 2: Convert to fraction form
    956.16/1,434.24 = 626.24/x
  3. Step 3: Cross multiply
    956.16x = 1,434.24 × 626.24
  4. Step 4: Simplify right side
    956.16x = 898,178.46
  5. Step 5: Solve for x
    x = 898,178.46/956.16
  6. Step 6: Final answer
    x = 939.36

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Why These Related Problems?

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