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Finding the Fourth Proportional to 109,011.76, 150,477.34 and 63,704.50

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Solution

The fourth proportional to 109,011.76, 150,477.34 and 63,704.50 is: 87,936.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,011.76 : 150,477.34 = 63,704.50 : x
  2. Step 2: Convert to fraction form
    109,011.76/150,477.34 = 63,704.50/x
  3. Step 3: Cross multiply
    109,011.76x = 150,477.34 × 63,704.50
  4. Step 4: Simplify right side
    109,011.76x = 9,586,083,706.03
  5. Step 5: Solve for x
    x = 9,586,083,706.03/109,011.76
  6. Step 6: Final answer
    x = 87,936.23

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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.