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Finding the Fourth Proportional to 962.54, 1,445 and 914.12

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Solution

The fourth proportional to 962.54, 1,445 and 914.12 is: 1,372.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.54 : 1,445 = 914.12 : x
  2. Step 2: Convert to fraction form
    962.54/1,445 = 914.12/x
  3. Step 3: Cross multiply
    962.54x = 1,445 × 914.12
  4. Step 4: Simplify right side
    962.54x = 1,320,903.40
  5. Step 5: Solve for x
    x = 1,320,903.40/962.54
  6. Step 6: Final answer
    x = 1,372.31

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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.