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Finding the Fourth Proportional to 91,369.87, 137,078.16 and 35,194.91

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Solution

The fourth proportional to 91,369.87, 137,078.16 and 35,194.91 is: 52,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,369.87 : 137,078.16 = 35,194.91 : x
  2. Step 2: Convert to fraction form
    91,369.87/137,078.16 = 35,194.91/x
  3. Step 3: Cross multiply
    91,369.87x = 137,078.16 × 35,194.91
  4. Step 4: Simplify right side
    91,369.87x = 4,824,452,835.27
  5. Step 5: Solve for x
    x = 4,824,452,835.27/91,369.87
  6. Step 6: Final answer
    x = 52,801.35

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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.