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Finding the Fourth Proportional to 952.88, 1,427.73 and 916.88

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Solution

The fourth proportional to 952.88, 1,427.73 and 916.88 is: 1,373.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.88 : 1,427.73 = 916.88 : x
  2. Step 2: Convert to fraction form
    952.88/1,427.73 = 916.88/x
  3. Step 3: Cross multiply
    952.88x = 1,427.73 × 916.88
  4. Step 4: Simplify right side
    952.88x = 1,309,057.08
  5. Step 5: Solve for x
    x = 1,309,057.08/952.88
  6. Step 6: Final answer
    x = 1,373.79

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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.