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Finding the Fourth Proportional to 157,676.66, 217,594.38 and 86,058.26

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Solution

The fourth proportional to 157,676.66, 217,594.38 and 86,058.26 is: 118,760.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,676.66 : 217,594.38 = 86,058.26 : x
  2. Step 2: Convert to fraction form
    157,676.66/217,594.38 = 86,058.26/x
  3. Step 3: Cross multiply
    157,676.66x = 217,594.38 × 86,058.26
  4. Step 4: Simplify right side
    157,676.66x = 18,725,793,728.58
  5. Step 5: Solve for x
    x = 18,725,793,728.58/157,676.66
  6. Step 6: Final answer
    x = 118,760.72

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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.