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Finding the Fourth Proportional to 118,706.84, 177,937.20 and 74,231.50

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Solution

The fourth proportional to 118,706.84, 177,937.20 and 74,231.50 is: 111,270.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,706.84 : 177,937.20 = 74,231.50 : x
  2. Step 2: Convert to fraction form
    118,706.84/177,937.20 = 74,231.50/x
  3. Step 3: Cross multiply
    118,706.84x = 177,937.20 × 74,231.50
  4. Step 4: Simplify right side
    118,706.84x = 13,208,545,261.80
  5. Step 5: Solve for x
    x = 13,208,545,261.80/118,706.84
  6. Step 6: Final answer
    x = 111,270.30

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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.