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Finding the Fourth Proportional to 118,847.70, 178,271.55 and 92,409.30

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Solution

The fourth proportional to 118,847.70, 178,271.55 and 92,409.30 is: 138,613.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,847.70 : 178,271.55 = 92,409.30 : x
  2. Step 2: Convert to fraction form
    118,847.70/178,271.55 = 92,409.30/x
  3. Step 3: Cross multiply
    118,847.70x = 178,271.55 × 92,409.30
  4. Step 4: Simplify right side
    118,847.70x = 16,473,949,145.42
  5. Step 5: Solve for x
    x = 16,473,949,145.42/118,847.70
  6. Step 6: Final answer
    x = 138,613.95

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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.