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Finding the Fourth Proportional to 176, 242.94 and 107

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Solution

The fourth proportional to 176, 242.94 and 107 is: 147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    176 : 242.94 = 107 : x
  2. Step 2: Convert to fraction form
    176/242.94 = 107/x
  3. Step 3: Cross multiply
    176x = 242.94 × 107
  4. Step 4: Simplify right side
    176x = 25,994.58
  5. Step 5: Solve for x
    x = 25,994.58/176
  6. Step 6: Final answer
    x = 147.70

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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.