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Finding the Fourth Proportional to 109,080.80, 163,621.20 and 104,472.80

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Solution

The fourth proportional to 109,080.80, 163,621.20 and 104,472.80 is: 156,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,080.80 : 163,621.20 = 104,472.80 : x
  2. Step 2: Convert to fraction form
    109,080.80/163,621.20 = 104,472.80/x
  3. Step 3: Cross multiply
    109,080.80x = 163,621.20 × 104,472.80
  4. Step 4: Simplify right side
    109,080.80x = 17,093,964,903.36
  5. Step 5: Solve for x
    x = 17,093,964,903.36/109,080.80
  6. Step 6: Final answer
    x = 156,709.20

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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.