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Finding the Fourth Proportional to 118,198.72, 177,294.84 and 39,314.44

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Solution

The fourth proportional to 118,198.72, 177,294.84 and 39,314.44 is: 58,970.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,198.72 : 177,294.84 = 39,314.44 : x
  2. Step 2: Convert to fraction form
    118,198.72/177,294.84 = 39,314.44/x
  3. Step 3: Cross multiply
    118,198.72x = 177,294.84 × 39,314.44
  4. Step 4: Simplify right side
    118,198.72x = 6,970,247,349.49
  5. Step 5: Solve for x
    x = 6,970,247,349.49/118,198.72
  6. Step 6: Final answer
    x = 58,970.58

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1.5x scale

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.