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Finding the Fourth Proportional to 962.06, 1,442.01 and 475.45

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Solution

The fourth proportional to 962.06, 1,442.01 and 475.45 is: 712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    962.06 : 1,442.01 = 475.45 : x
  2. Step 2: Convert to fraction form
    962.06/1,442.01 = 475.45/x
  3. Step 3: Cross multiply
    962.06x = 1,442.01 × 475.45
  4. Step 4: Simplify right side
    962.06x = 685,603.65
  5. Step 5: Solve for x
    x = 685,603.65/962.06
  6. Step 6: Final answer
    x = 712.64

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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.