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Finding the Fourth Proportional to 191,512.80, 287,269.20 and 177,078.60

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Solution

The fourth proportional to 191,512.80, 287,269.20 and 177,078.60 is: 265,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,512.80 : 287,269.20 = 177,078.60 : x
  2. Step 2: Convert to fraction form
    191,512.80/287,269.20 = 177,078.60/x
  3. Step 3: Cross multiply
    191,512.80x = 287,269.20 × 177,078.60
  4. Step 4: Simplify right side
    191,512.80x = 50,869,227,759.12
  5. Step 5: Solve for x
    x = 50,869,227,759.12/191,512.80
  6. Step 6: Final answer
    x = 265,617.90

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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.