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Finding the Fourth Proportional to 194.82, 292.35 and 98.64

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Solution

The fourth proportional to 194.82, 292.35 and 98.64 is: 148.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.82 : 292.35 = 98.64 : x
  2. Step 2: Convert to fraction form
    194.82/292.35 = 98.64/x
  3. Step 3: Cross multiply
    194.82x = 292.35 × 98.64
  4. Step 4: Simplify right side
    194.82x = 28,837.40
  5. Step 5: Solve for x
    x = 28,837.40/194.82
  6. Step 6: Final answer
    x = 148.02

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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.