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Finding the Fourth Proportional to 118,021.05, 177,083.90 and 61,847.80

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Solution

The fourth proportional to 118,021.05, 177,083.90 and 61,847.80 is: 92,799.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,021.05 : 177,083.90 = 61,847.80 : x
  2. Step 2: Convert to fraction form
    118,021.05/177,083.90 = 61,847.80/x
  3. Step 3: Cross multiply
    118,021.05x = 177,083.90 × 61,847.80
  4. Step 4: Simplify right side
    118,021.05x = 10,952,249,932.55
  5. Step 5: Solve for x
    x = 10,952,249,932.55/118,021.05
  6. Step 6: Final answer
    x = 92,799.12

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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.