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Finding the Fourth Proportional to 157,799.01, 217,763.43 and 86,179.02

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Solution

The fourth proportional to 157,799.01, 217,763.43 and 86,179.02 is: 118,927.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,799.01 : 217,763.43 = 86,179.02 : x
  2. Step 2: Convert to fraction form
    157,799.01/217,763.43 = 86,179.02/x
  3. Step 3: Cross multiply
    157,799.01x = 217,763.43 × 86,179.02
  4. Step 4: Simplify right side
    157,799.01x = 18,766,638,989.24
  5. Step 5: Solve for x
    x = 18,766,638,989.24/157,799.01
  6. Step 6: Final answer
    x = 118,927.48

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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.