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Finding the Fourth Proportional to 99,786.99, 149,573.36 and 49,768.27

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Solution

The fourth proportional to 99,786.99, 149,573.36 and 49,768.27 is: 74,598.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,786.99 : 149,573.36 = 49,768.27 : x
  2. Step 2: Convert to fraction form
    99,786.99/149,573.36 = 49,768.27/x
  3. Step 3: Cross multiply
    99,786.99x = 149,573.36 × 49,768.27
  4. Step 4: Simplify right side
    99,786.99x = 7,444,007,116.45
  5. Step 5: Solve for x
    x = 7,444,007,116.45/99,786.99
  6. Step 6: Final answer
    x = 74,598.98

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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.