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Finding the Fourth Proportional to 118,556.89, 177,637.89 and 83,422.73

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Solution

The fourth proportional to 118,556.89, 177,637.89 and 83,422.73 is: 124,995.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,556.89 : 177,637.89 = 83,422.73 : x
  2. Step 2: Convert to fraction form
    118,556.89/177,637.89 = 83,422.73/x
  3. Step 3: Cross multiply
    118,556.89x = 177,637.89 × 83,422.73
  4. Step 4: Simplify right side
    118,556.89x = 14,819,037,735.24
  5. Step 5: Solve for x
    x = 14,819,037,735.24/118,556.89
  6. Step 6: Final answer
    x = 124,995.16

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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.