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Finding the Fourth Proportional to 118,072.59, 177,021.40 and 71,314.53

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Solution

The fourth proportional to 118,072.59, 177,021.40 and 71,314.53 is: 106,918.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,072.59 : 177,021.40 = 71,314.53 : x
  2. Step 2: Convert to fraction form
    118,072.59/177,021.40 = 71,314.53/x
  3. Step 3: Cross multiply
    118,072.59x = 177,021.40 × 71,314.53
  4. Step 4: Simplify right side
    118,072.59x = 12,624,197,232.54
  5. Step 5: Solve for x
    x = 12,624,197,232.54/118,072.59
  6. Step 6: Final answer
    x = 106,918.95

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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.