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Finding the Fourth Proportional to 307.94, 462 and 125.34

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Solution

The fourth proportional to 307.94, 462 and 125.34 is: 188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.94 : 462 = 125.34 : x
  2. Step 2: Convert to fraction form
    307.94/462 = 125.34/x
  3. Step 3: Cross multiply
    307.94x = 462 × 125.34
  4. Step 4: Simplify right side
    307.94x = 57,907.08
  5. Step 5: Solve for x
    x = 57,907.08/307.94
  6. Step 6: Final answer
    x = 188.05

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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.