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Finding the Fourth Proportional to 168,051.72, 251,990.10 and 49,707.09

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Solution

The fourth proportional to 168,051.72, 251,990.10 and 49,707.09 is: 74,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,051.72 : 251,990.10 = 49,707.09 : x
  2. Step 2: Convert to fraction form
    168,051.72/251,990.10 = 49,707.09/x
  3. Step 3: Cross multiply
    168,051.72x = 251,990.10 × 49,707.09
  4. Step 4: Simplify right side
    168,051.72x = 12,525,694,579.81
  5. Step 5: Solve for x
    x = 12,525,694,579.81/168,051.72
  6. Step 6: Final answer
    x = 74,534.76

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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.