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Finding the Fourth Proportional to 118,955.88, 178,377.31 and 69,051.27

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Solution

The fourth proportional to 118,955.88, 178,377.31 and 69,051.27 is: 103,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,955.88 : 178,377.31 = 69,051.27 : x
  2. Step 2: Convert to fraction form
    118,955.88/178,377.31 = 69,051.27/x
  3. Step 3: Cross multiply
    118,955.88x = 178,377.31 × 69,051.27
  4. Step 4: Simplify right side
    118,955.88x = 12,317,179,794.68
  5. Step 5: Solve for x
    x = 12,317,179,794.68/118,955.88
  6. Step 6: Final answer
    x = 103,544.10

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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.