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Finding the Fourth Proportional to 962.76, 1,442.46 and 474.60

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Solution

The fourth proportional to 962.76, 1,442.46 and 474.60 is: 711.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.76 : 1,442.46 = 474.60 : x
  2. Step 2: Convert to fraction form
    962.76/1,442.46 = 474.60/x
  3. Step 3: Cross multiply
    962.76x = 1,442.46 × 474.60
  4. Step 4: Simplify right side
    962.76x = 684,591.52
  5. Step 5: Solve for x
    x = 684,591.52/962.76
  6. Step 6: Final answer
    x = 711.07

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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.