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Finding the Fourth Proportional to 48,871.70, 73,293.15 and 19,279.70

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Solution

The fourth proportional to 48,871.70, 73,293.15 and 19,279.70 is: 28,913.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,871.70 : 73,293.15 = 19,279.70 : x
  2. Step 2: Convert to fraction form
    48,871.70/73,293.15 = 19,279.70/x
  3. Step 3: Cross multiply
    48,871.70x = 73,293.15 × 19,279.70
  4. Step 4: Simplify right side
    48,871.70x = 1,413,069,944.06
  5. Step 5: Solve for x
    x = 1,413,069,944.06/48,871.70
  6. Step 6: Final answer
    x = 28,913.87

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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.