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Finding the Fourth Proportional to 171,511.76, 236,703.74 and 98,917.48

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Solution

The fourth proportional to 171,511.76, 236,703.74 and 98,917.48 is: 136,516.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,511.76 : 236,703.74 = 98,917.48 : x
  2. Step 2: Convert to fraction form
    171,511.76/236,703.74 = 98,917.48/x
  3. Step 3: Cross multiply
    171,511.76x = 236,703.74 × 98,917.48
  4. Step 4: Simplify right side
    171,511.76x = 23,414,137,467.38
  5. Step 5: Solve for x
    x = 23,414,137,467.38/171,511.76
  6. Step 6: Final answer
    x = 136,516.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.