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Finding the Fourth Proportional to 98,744.94, 147,772.89 and 80,767.80

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Solution

The fourth proportional to 98,744.94, 147,772.89 and 80,767.80 is: 120,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,744.94 : 147,772.89 = 80,767.80 : x
  2. Step 2: Convert to fraction form
    98,744.94/147,772.89 = 80,767.80/x
  3. Step 3: Cross multiply
    98,744.94x = 147,772.89 × 80,767.80
  4. Step 4: Simplify right side
    98,744.94x = 11,935,291,224.94
  5. Step 5: Solve for x
    x = 11,935,291,224.94/98,744.94
  6. Step 6: Final answer
    x = 120,869.90

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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.