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Finding the Fourth Proportional to 118,810.67, 177,791.31 and 103,199.63

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Solution

The fourth proportional to 118,810.67, 177,791.31 and 103,199.63 is: 154,430.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,810.67 : 177,791.31 = 103,199.63 : x
  2. Step 2: Convert to fraction form
    118,810.67/177,791.31 = 103,199.63/x
  3. Step 3: Cross multiply
    118,810.67x = 177,791.31 × 103,199.63
  4. Step 4: Simplify right side
    118,810.67x = 18,347,996,520.26
  5. Step 5: Solve for x
    x = 18,347,996,520.26/118,810.67
  6. Step 6: Final answer
    x = 154,430.55

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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.