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Finding the Fourth Proportional to 169,629.20, 254,346.60 and 51,282.80

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Solution

The fourth proportional to 169,629.20, 254,346.60 and 51,282.80 is: 76,894.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,629.20 : 254,346.60 = 51,282.80 : x
  2. Step 2: Convert to fraction form
    169,629.20/254,346.60 = 51,282.80/x
  3. Step 3: Cross multiply
    169,629.20x = 254,346.60 × 51,282.80
  4. Step 4: Simplify right side
    169,629.20x = 13,043,605,818.48
  5. Step 5: Solve for x
    x = 13,043,605,818.48/169,629.20
  6. Step 6: Final answer
    x = 76,894.81

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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.