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Finding the Fourth Proportional to 223,187.48, 308,017.72 and 126,408.56

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Solution

The fourth proportional to 223,187.48, 308,017.72 and 126,408.56 is: 174,454.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,187.48 : 308,017.72 = 126,408.56 : x
  2. Step 2: Convert to fraction form
    223,187.48/308,017.72 = 126,408.56/x
  3. Step 3: Cross multiply
    223,187.48x = 308,017.72 × 126,408.56
  4. Step 4: Simplify right side
    223,187.48x = 38,936,074,583.57
  5. Step 5: Solve for x
    x = 38,936,074,583.57/223,187.48
  6. Step 6: Final answer
    x = 174,454.56

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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.