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Finding the Fourth Proportional to 114,908.80, 172,363.20 and 106,614.40

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Solution

The fourth proportional to 114,908.80, 172,363.20 and 106,614.40 is: 159,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,908.80 : 172,363.20 = 106,614.40 : x
  2. Step 2: Convert to fraction form
    114,908.80/172,363.20 = 106,614.40/x
  3. Step 3: Cross multiply
    114,908.80x = 172,363.20 × 106,614.40
  4. Step 4: Simplify right side
    114,908.80x = 18,376,399,150.08
  5. Step 5: Solve for x
    x = 18,376,399,150.08/114,908.80
  6. Step 6: Final answer
    x = 159,921.60

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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.