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Finding the Fourth Proportional to 61,822.40, 92,740.86 and 19,687.73

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Solution

The fourth proportional to 61,822.40, 92,740.86 and 19,687.73 is: 29,533.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,822.40 : 92,740.86 = 19,687.73 : x
  2. Step 2: Convert to fraction form
    61,822.40/92,740.86 = 19,687.73/x
  3. Step 3: Cross multiply
    61,822.40x = 92,740.86 × 19,687.73
  4. Step 4: Simplify right side
    61,822.40x = 1,825,857,011.65
  5. Step 5: Solve for x
    x = 1,825,857,011.65/61,822.40
  6. Step 6: Final answer
    x = 29,533.91

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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.