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Finding the Fourth Proportional to 117,961.70, 176,827.35 and 105,520.10

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Solution

The fourth proportional to 117,961.70, 176,827.35 and 105,520.10 is: 158,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,961.70 : 176,827.35 = 105,520.10 : x
  2. Step 2: Convert to fraction form
    117,961.70/176,827.35 = 105,520.10/x
  3. Step 3: Cross multiply
    117,961.70x = 176,827.35 × 105,520.10
  4. Step 4: Simplify right side
    117,961.70x = 18,658,839,654.74
  5. Step 5: Solve for x
    x = 18,658,839,654.74/117,961.70
  6. Step 6: Final answer
    x = 158,177.10

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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.