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Finding the Fourth Proportional to 171,648.80, 257,473.20 and 108,663.20

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Solution

The fourth proportional to 171,648.80, 257,473.20 and 108,663.20 is: 162,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,648.80 : 257,473.20 = 108,663.20 : x
  2. Step 2: Convert to fraction form
    171,648.80/257,473.20 = 108,663.20/x
  3. Step 3: Cross multiply
    171,648.80x = 257,473.20 × 108,663.20
  4. Step 4: Simplify right side
    171,648.80x = 27,977,861,826.24
  5. Step 5: Solve for x
    x = 27,977,861,826.24/171,648.80
  6. Step 6: Final answer
    x = 162,994.80

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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.