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Finding the Fourth Proportional to 184.59, 276.92 and 87

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Solution

The fourth proportional to 184.59, 276.92 and 87 is: 130.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.59 : 276.92 = 87 : x
  2. Step 2: Convert to fraction form
    184.59/276.92 = 87/x
  3. Step 3: Cross multiply
    184.59x = 276.92 × 87
  4. Step 4: Simplify right side
    184.59x = 24,091.61
  5. Step 5: Solve for x
    x = 24,091.61/184.59
  6. Step 6: Final answer
    x = 130.51

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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.