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Finding the Fourth Proportional to 131,813.72, 197,679.71 and 47,562.98

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Solution

The fourth proportional to 131,813.72, 197,679.71 and 47,562.98 is: 71,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,813.72 : 197,679.71 = 47,562.98 : x
  2. Step 2: Convert to fraction form
    131,813.72/197,679.71 = 47,562.98/x
  3. Step 3: Cross multiply
    131,813.72x = 197,679.71 × 47,562.98
  4. Step 4: Simplify right side
    131,813.72x = 9,402,234,866.92
  5. Step 5: Solve for x
    x = 9,402,234,866.92/131,813.72
  6. Step 6: Final answer
    x = 71,329.72

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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.