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Finding the Fourth Proportional to 137,260.44, 205,502.40 and 87,216.48

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Solution

The fourth proportional to 137,260.44, 205,502.40 and 87,216.48 is: 130,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,260.44 : 205,502.40 = 87,216.48 : x
  2. Step 2: Convert to fraction form
    137,260.44/205,502.40 = 87,216.48/x
  3. Step 3: Cross multiply
    137,260.44x = 205,502.40 × 87,216.48
  4. Step 4: Simplify right side
    137,260.44x = 17,923,195,959.55
  5. Step 5: Solve for x
    x = 17,923,195,959.55/137,260.44
  6. Step 6: Final answer
    x = 130,578.02

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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.