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Finding the Fourth Proportional to 127,390.62, 191,087.82 and 48,509.22

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Solution

The fourth proportional to 127,390.62, 191,087.82 and 48,509.22 is: 72,764.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,390.62 : 191,087.82 = 48,509.22 : x
  2. Step 2: Convert to fraction form
    127,390.62/191,087.82 = 48,509.22/x
  3. Step 3: Cross multiply
    127,390.62x = 191,087.82 × 48,509.22
  4. Step 4: Simplify right side
    127,390.62x = 9,269,521,099.70
  5. Step 5: Solve for x
    x = 9,269,521,099.70/127,390.62
  6. Step 6: Final answer
    x = 72,764.55

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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.