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Finding the Fourth Proportional to 118,486.50, 177,758.91 and 35,380.50

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Solution

The fourth proportional to 118,486.50, 177,758.91 and 35,380.50 is: 53,079.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,486.50 : 177,758.91 = 35,380.50 : x
  2. Step 2: Convert to fraction form
    118,486.50/177,758.91 = 35,380.50/x
  3. Step 3: Cross multiply
    118,486.50x = 177,758.91 × 35,380.50
  4. Step 4: Simplify right side
    118,486.50x = 6,289,199,115.26
  5. Step 5: Solve for x
    x = 6,289,199,115.26/118,486.50
  6. Step 6: Final answer
    x = 53,079.46

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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.