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Finding the Fourth Proportional to 48,297.40, 72,458.90 and 17,129.40

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Solution

The fourth proportional to 48,297.40, 72,458.90 and 17,129.40 is: 25,698.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,297.40 : 72,458.90 = 17,129.40 : x
  2. Step 2: Convert to fraction form
    48,297.40/72,458.90 = 17,129.40/x
  3. Step 3: Cross multiply
    48,297.40x = 72,458.90 × 17,129.40
  4. Step 4: Simplify right side
    48,297.40x = 1,241,177,481.66
  5. Step 5: Solve for x
    x = 1,241,177,481.66/48,297.40
  6. Step 6: Final answer
    x = 25,698.64

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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.