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Finding the Fourth Proportional to 140,294.52, 193,603.62 and 79,863.87

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Solution

The fourth proportional to 140,294.52, 193,603.62 and 79,863.87 is: 110,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,294.52 : 193,603.62 = 79,863.87 : x
  2. Step 2: Convert to fraction form
    140,294.52/193,603.62 = 79,863.87/x
  3. Step 3: Cross multiply
    140,294.52x = 193,603.62 × 79,863.87
  4. Step 4: Simplify right side
    140,294.52x = 15,461,934,339.21
  5. Step 5: Solve for x
    x = 15,461,934,339.21/140,294.52
  6. Step 6: Final answer
    x = 110,210.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.