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Finding the Fourth Proportional to 48,798.62, 73,208.71 and 20,742.65

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Solution

The fourth proportional to 48,798.62, 73,208.71 and 20,742.65 is: 31,118.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,798.62 : 73,208.71 = 20,742.65 : x
  2. Step 2: Convert to fraction form
    48,798.62/73,208.71 = 20,742.65/x
  3. Step 3: Cross multiply
    48,798.62x = 73,208.71 × 20,742.65
  4. Step 4: Simplify right side
    48,798.62x = 1,518,542,994.70
  5. Step 5: Solve for x
    x = 1,518,542,994.70/48,798.62
  6. Step 6: Final answer
    x = 31,118.56

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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.