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Finding the Fourth Proportional to 117.52, 162 and 96.70

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Solution

The fourth proportional to 117.52, 162 and 96.70 is: 133.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.52 : 162 = 96.70 : x
  2. Step 2: Convert to fraction form
    117.52/162 = 96.70/x
  3. Step 3: Cross multiply
    117.52x = 162 × 96.70
  4. Step 4: Simplify right side
    117.52x = 15,665.40
  5. Step 5: Solve for x
    x = 15,665.40/117.52
  6. Step 6: Final answer
    x = 133.30

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1.5x scale

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.