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Finding the Fourth Proportional to 191,982.80, 287,974.20 and 171,765.20

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Solution

The fourth proportional to 191,982.80, 287,974.20 and 171,765.20 is: 257,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,982.80 : 287,974.20 = 171,765.20 : x
  2. Step 2: Convert to fraction form
    191,982.80/287,974.20 = 171,765.20/x
  3. Step 3: Cross multiply
    191,982.80x = 287,974.20 × 171,765.20
  4. Step 4: Simplify right side
    191,982.80x = 49,463,946,057.84
  5. Step 5: Solve for x
    x = 49,463,946,057.84/191,982.80
  6. Step 6: Final answer
    x = 257,647.80

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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.