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Finding the Fourth Proportional to 79,141.70, 118,727.94 and 25,848.56

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Solution

The fourth proportional to 79,141.70, 118,727.94 and 25,848.56 is: 38,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,141.70 : 118,727.94 = 25,848.56 : x
  2. Step 2: Convert to fraction form
    79,141.70/118,727.94 = 25,848.56/x
  3. Step 3: Cross multiply
    79,141.70x = 118,727.94 × 25,848.56
  4. Step 4: Simplify right side
    79,141.70x = 3,068,946,280.77
  5. Step 5: Solve for x
    x = 3,068,946,280.77/79,141.70
  6. Step 6: Final answer
    x = 38,777.87

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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.