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Finding the Fourth Proportional to 168,916.65, 253,310.77 and 69,023.26

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Solution

The fourth proportional to 168,916.65, 253,310.77 and 69,023.26 is: 103,508.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,916.65 : 253,310.77 = 69,023.26 : x
  2. Step 2: Convert to fraction form
    168,916.65/253,310.77 = 69,023.26/x
  3. Step 3: Cross multiply
    168,916.65x = 253,310.77 × 69,023.26
  4. Step 4: Simplify right side
    168,916.65x = 17,484,335,138.51
  5. Step 5: Solve for x
    x = 17,484,335,138.51/168,916.65
  6. Step 6: Final answer
    x = 103,508.65

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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.