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Finding the Fourth Proportional to 118,213.78, 177,320.70 and 35,107.78

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Solution

The fourth proportional to 118,213.78, 177,320.70 and 35,107.78 is: 52,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,213.78 : 177,320.70 = 35,107.78 : x
  2. Step 2: Convert to fraction form
    118,213.78/177,320.70 = 35,107.78/x
  3. Step 3: Cross multiply
    118,213.78x = 177,320.70 × 35,107.78
  4. Step 4: Simplify right side
    118,213.78x = 6,225,336,125.05
  5. Step 5: Solve for x
    x = 6,225,336,125.05/118,213.78
  6. Step 6: Final answer
    x = 52,661.68

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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.