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Finding the Fourth Proportional to 130,055.20, 194,791.20 and 112,559.20

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Solution

The fourth proportional to 130,055.20, 194,791.20 and 112,559.20 is: 168,586.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,055.20 : 194,791.20 = 112,559.20 : x
  2. Step 2: Convert to fraction form
    130,055.20/194,791.20 = 112,559.20/x
  3. Step 3: Cross multiply
    130,055.20x = 194,791.20 × 112,559.20
  4. Step 4: Simplify right side
    130,055.20x = 21,925,541,639.04
  5. Step 5: Solve for x
    x = 21,925,541,639.04/130,055.20
  6. Step 6: Final answer
    x = 168,586.43

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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.