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Finding the Fourth Proportional to 118,168, 177,213.66 and 39,261.04

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Solution

The fourth proportional to 118,168, 177,213.66 and 39,261.04 is: 58,878.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,168 : 177,213.66 = 39,261.04 : x
  2. Step 2: Convert to fraction form
    118,168/177,213.66 = 39,261.04/x
  3. Step 3: Cross multiply
    118,168x = 177,213.66 × 39,261.04
  4. Step 4: Simplify right side
    118,168x = 6,957,592,593.81
  5. Step 5: Solve for x
    x = 6,957,592,593.81/118,168
  6. Step 6: Final answer
    x = 58,878.82

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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.