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Finding the Fourth Proportional to 169,200.78, 253,786.65 and 69,332.46

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Solution

The fourth proportional to 169,200.78, 253,786.65 and 69,332.46 is: 103,992.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,200.78 : 253,786.65 = 69,332.46 : x
  2. Step 2: Convert to fraction form
    169,200.78/253,786.65 = 69,332.46/x
  3. Step 3: Cross multiply
    169,200.78x = 253,786.65 × 69,332.46
  4. Step 4: Simplify right side
    169,200.78x = 17,595,652,759.66
  5. Step 5: Solve for x
    x = 17,595,652,759.66/169,200.78
  6. Step 6: Final answer
    x = 103,992.74

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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.