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Finding the Fourth Proportional to 117,906.10, 176,859.15 and 105,003.70

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Solution

The fourth proportional to 117,906.10, 176,859.15 and 105,003.70 is: 157,505.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,906.10 : 176,859.15 = 105,003.70 : x
  2. Step 2: Convert to fraction form
    117,906.10/176,859.15 = 105,003.70/x
  3. Step 3: Cross multiply
    117,906.10x = 176,859.15 × 105,003.70
  4. Step 4: Simplify right side
    117,906.10x = 18,570,865,128.86
  5. Step 5: Solve for x
    x = 18,570,865,128.86/117,906.10
  6. Step 6: Final answer
    x = 157,505.55

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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.