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Finding the Fourth Proportional to 125,816.70, 188,725.05 and 50,972.70

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Solution

The fourth proportional to 125,816.70, 188,725.05 and 50,972.70 is: 76,459.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,816.70 : 188,725.05 = 50,972.70 : x
  2. Step 2: Convert to fraction form
    125,816.70/188,725.05 = 50,972.70/x
  3. Step 3: Cross multiply
    125,816.70x = 188,725.05 × 50,972.70
  4. Step 4: Simplify right side
    125,816.70x = 9,619,825,356.14
  5. Step 5: Solve for x
    x = 9,619,825,356.14/125,816.70
  6. Step 6: Final answer
    x = 76,459.05

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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.