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Finding the Fourth Proportional to 117, 175.56 and 52.92

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Solution

The fourth proportional to 117, 175.56 and 52.92 is: 79.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117 : 175.56 = 52.92 : x
  2. Step 2: Convert to fraction form
    117/175.56 = 52.92/x
  3. Step 3: Cross multiply
    117x = 175.56 × 52.92
  4. Step 4: Simplify right side
    117x = 9,290.64
  5. Step 5: Solve for x
    x = 9,290.64/117
  6. Step 6: Final answer
    x = 79.41

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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.