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Finding the Fourth Proportional to 168,699.71, 252,953.89 and 68,742.88

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Solution

The fourth proportional to 168,699.71, 252,953.89 and 68,742.88 is: 103,075.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,699.71 : 252,953.89 = 68,742.88 : x
  2. Step 2: Convert to fraction form
    168,699.71/252,953.89 = 68,742.88/x
  3. Step 3: Cross multiply
    168,699.71x = 252,953.89 × 68,742.88
  4. Step 4: Simplify right side
    168,699.71x = 17,388,778,101.56
  5. Step 5: Solve for x
    x = 17,388,778,101.56/168,699.71
  6. Step 6: Final answer
    x = 103,075.33

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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.