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Finding the Fourth Proportional to 92,908.88, 139,542.60 and 79,611.92

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Solution

The fourth proportional to 92,908.88, 139,542.60 and 79,611.92 is: 119,571.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,908.88 : 139,542.60 = 79,611.92 : x
  2. Step 2: Convert to fraction form
    92,908.88/139,542.60 = 79,611.92/x
  3. Step 3: Cross multiply
    92,908.88x = 139,542.60 × 79,611.92
  4. Step 4: Simplify right side
    92,908.88x = 11,109,254,307.79
  5. Step 5: Solve for x
    x = 11,109,254,307.79/92,908.88
  6. Step 6: Final answer
    x = 119,571.50

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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.