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Finding the Fourth Proportional to 48,698.70, 73,019.88 and 19,081.86

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Solution

The fourth proportional to 48,698.70, 73,019.88 and 19,081.86 is: 28,611.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,698.70 : 73,019.88 = 19,081.86 : x
  2. Step 2: Convert to fraction form
    48,698.70/73,019.88 = 19,081.86/x
  3. Step 3: Cross multiply
    48,698.70x = 73,019.88 × 19,081.86
  4. Step 4: Simplify right side
    48,698.70x = 1,393,355,127.38
  5. Step 5: Solve for x
    x = 1,393,355,127.38/48,698.70
  6. Step 6: Final answer
    x = 28,611.75

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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.