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Finding the Fourth Proportional to 118,136.80, 177,205.20 and 55,928.80

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Solution

The fourth proportional to 118,136.80, 177,205.20 and 55,928.80 is: 83,893.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,136.80 : 177,205.20 = 55,928.80 : x
  2. Step 2: Convert to fraction form
    118,136.80/177,205.20 = 55,928.80/x
  3. Step 3: Cross multiply
    118,136.80x = 177,205.20 × 55,928.80
  4. Step 4: Simplify right side
    118,136.80x = 9,910,874,189.76
  5. Step 5: Solve for x
    x = 9,910,874,189.76/118,136.80
  6. Step 6: Final answer
    x = 83,893.20

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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.