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Finding the Fourth Proportional to 99,604.86, 137,394.27 and 59,291.70

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Solution

The fourth proportional to 99,604.86, 137,394.27 and 59,291.70 is: 81,786.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,604.86 : 137,394.27 = 59,291.70 : x
  2. Step 2: Convert to fraction form
    99,604.86/137,394.27 = 59,291.70/x
  3. Step 3: Cross multiply
    99,604.86x = 137,394.27 × 59,291.70
  4. Step 4: Simplify right side
    99,604.86x = 8,146,339,838.56
  5. Step 5: Solve for x
    x = 8,146,339,838.56/99,604.86
  6. Step 6: Final answer
    x = 81,786.57

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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.