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Finding the Fourth Proportional to 168,786.68, 253,235.40 and 69,030.74

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Solution

The fourth proportional to 168,786.68, 253,235.40 and 69,030.74 is: 103,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,786.68 : 253,235.40 = 69,030.74 : x
  2. Step 2: Convert to fraction form
    168,786.68/253,235.40 = 69,030.74/x
  3. Step 3: Cross multiply
    168,786.68x = 253,235.40 × 69,030.74
  4. Step 4: Simplify right side
    168,786.68x = 17,481,027,056.20
  5. Step 5: Solve for x
    x = 17,481,027,056.20/168,786.68
  6. Step 6: Final answer
    x = 103,568.76

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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.