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Finding the Fourth Proportional to 102,924.80, 154,481.92 and 53,039.28

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Solution

The fourth proportional to 102,924.80, 154,481.92 and 53,039.28 is: 79,607.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,924.80 : 154,481.92 = 53,039.28 : x
  2. Step 2: Convert to fraction form
    102,924.80/154,481.92 = 53,039.28/x
  3. Step 3: Cross multiply
    102,924.80x = 154,481.92 × 53,039.28
  4. Step 4: Simplify right side
    102,924.80x = 8,193,609,809.82
  5. Step 5: Solve for x
    x = 8,193,609,809.82/102,924.80
  6. Step 6: Final answer
    x = 79,607.73

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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.