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Finding the Fourth Proportional to 171,622.60, 257,606.70 and 82,947.40

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Solution

The fourth proportional to 171,622.60, 257,606.70 and 82,947.40 is: 124,504.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,622.60 : 257,606.70 = 82,947.40 : x
  2. Step 2: Convert to fraction form
    171,622.60/257,606.70 = 82,947.40/x
  3. Step 3: Cross multiply
    171,622.60x = 257,606.70 × 82,947.40
  4. Step 4: Simplify right side
    171,622.60x = 21,367,805,987.58
  5. Step 5: Solve for x
    x = 21,367,805,987.58/171,622.60
  6. Step 6: Final answer
    x = 124,504.62

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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.