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Finding the Fourth Proportional to 164,864.60, 246,640.80 and 142,921.70

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Solution

The fourth proportional to 164,864.60, 246,640.80 and 142,921.70 is: 213,813.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,864.60 : 246,640.80 = 142,921.70 : x
  2. Step 2: Convert to fraction form
    164,864.60/246,640.80 = 142,921.70/x
  3. Step 3: Cross multiply
    164,864.60x = 246,640.80 × 142,921.70
  4. Step 4: Simplify right side
    164,864.60x = 35,250,322,425.36
  5. Step 5: Solve for x
    x = 35,250,322,425.36/164,864.60
  6. Step 6: Final answer
    x = 213,813.77

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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.