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Finding the Fourth Proportional to 131,053.60, 196,810.80 and 126,906.40

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Solution

The fourth proportional to 131,053.60, 196,810.80 and 126,906.40 is: 190,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,053.60 : 196,810.80 = 126,906.40 : x
  2. Step 2: Convert to fraction form
    131,053.60/196,810.80 = 126,906.40/x
  3. Step 3: Cross multiply
    131,053.60x = 196,810.80 × 126,906.40
  4. Step 4: Simplify right side
    131,053.60x = 24,976,550,109.12
  5. Step 5: Solve for x
    x = 24,976,550,109.12/131,053.60
  6. Step 6: Final answer
    x = 190,582.71

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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.