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Finding the Fourth Proportional to 48,795.20, 73,192.80 and 11,859.20

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Solution

The fourth proportional to 48,795.20, 73,192.80 and 11,859.20 is: 17,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,795.20 : 73,192.80 = 11,859.20 : x
  2. Step 2: Convert to fraction form
    48,795.20/73,192.80 = 11,859.20/x
  3. Step 3: Cross multiply
    48,795.20x = 73,192.80 × 11,859.20
  4. Step 4: Simplify right side
    48,795.20x = 868,008,053.76
  5. Step 5: Solve for x
    x = 868,008,053.76/48,795.20
  6. Step 6: Final answer
    x = 17,788.80

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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.