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Finding the Fourth Proportional to 160.98, 222 and 117.24

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Solution

The fourth proportional to 160.98, 222 and 117.24 is: 161.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.98 : 222 = 117.24 : x
  2. Step 2: Convert to fraction form
    160.98/222 = 117.24/x
  3. Step 3: Cross multiply
    160.98x = 222 × 117.24
  4. Step 4: Simplify right side
    160.98x = 26,026.17
  5. Step 5: Solve for x
    x = 26,026.17/160.98
  6. Step 6: Final answer
    x = 161.68

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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.