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Finding the Fourth Proportional to 118,952.69, 178,372.53 and 69,048.09

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Solution

The fourth proportional to 118,952.69, 178,372.53 and 69,048.09 is: 103,539.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,952.69 : 178,372.53 = 69,048.09 : x
  2. Step 2: Convert to fraction form
    118,952.69/178,372.53 = 69,048.09/x
  3. Step 3: Cross multiply
    118,952.69x = 178,372.53 × 69,048.09
  4. Step 4: Simplify right side
    118,952.69x = 12,316,282,504.97
  5. Step 5: Solve for x
    x = 12,316,282,504.97/118,952.69
  6. Step 6: Final answer
    x = 103,539.34

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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.