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Finding the Fourth Proportional to 139,793.14, 191,829.49 and 127,121.14

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Solution

The fourth proportional to 139,793.14, 191,829.49 and 127,121.14 is: 174,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,793.14 : 191,829.49 = 127,121.14 : x
  2. Step 2: Convert to fraction form
    139,793.14/191,829.49 = 127,121.14/x
  3. Step 3: Cross multiply
    139,793.14x = 191,829.49 × 127,121.14
  4. Step 4: Simplify right side
    139,793.14x = 24,385,582,818.81
  5. Step 5: Solve for x
    x = 24,385,582,818.81/139,793.14
  6. Step 6: Final answer
    x = 174,440.48

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.