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Finding the Fourth Proportional to 1,026.56, 1,416.16 and 633.44

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Solution

The fourth proportional to 1,026.56, 1,416.16 and 633.44 is: 873.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.56 : 1,416.16 = 633.44 : x
  2. Step 2: Convert to fraction form
    1,026.56/1,416.16 = 633.44/x
  3. Step 3: Cross multiply
    1,026.56x = 1,416.16 × 633.44
  4. Step 4: Simplify right side
    1,026.56x = 897,052.39
  5. Step 5: Solve for x
    x = 897,052.39/1,026.56
  6. Step 6: Final answer
    x = 873.84

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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.