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Finding the Fourth Proportional to 48,668.80, 73,003.20 and 19,087.60

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Solution

The fourth proportional to 48,668.80, 73,003.20 and 19,087.60 is: 28,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,668.80 : 73,003.20 = 19,087.60 : x
  2. Step 2: Convert to fraction form
    48,668.80/73,003.20 = 19,087.60/x
  3. Step 3: Cross multiply
    48,668.80x = 73,003.20 × 19,087.60
  4. Step 4: Simplify right side
    48,668.80x = 1,393,455,880.32
  5. Step 5: Solve for x
    x = 1,393,455,880.32/48,668.80
  6. Step 6: Final answer
    x = 28,631.40

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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.