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Finding the Fourth Proportional to 135,048.56, 186,377.88 and 74,624.44

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Solution

The fourth proportional to 135,048.56, 186,377.88 and 74,624.44 is: 102,987.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,048.56 : 186,377.88 = 74,624.44 : x
  2. Step 2: Convert to fraction form
    135,048.56/186,377.88 = 74,624.44/x
  3. Step 3: Cross multiply
    135,048.56x = 186,377.88 × 74,624.44
  4. Step 4: Simplify right side
    135,048.56x = 13,908,344,923.39
  5. Step 5: Solve for x
    x = 13,908,344,923.39/135,048.56
  6. Step 6: Final answer
    x = 102,987.73

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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.