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Finding the Fourth Proportional to 66,290.80, 99,193.20 and 48,794.80

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Solution

The fourth proportional to 66,290.80, 99,193.20 and 48,794.80 is: 73,013.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,290.80 : 99,193.20 = 48,794.80 : x
  2. Step 2: Convert to fraction form
    66,290.80/99,193.20 = 48,794.80/x
  3. Step 3: Cross multiply
    66,290.80x = 99,193.20 × 48,794.80
  4. Step 4: Simplify right side
    66,290.80x = 4,840,112,355.36
  5. Step 5: Solve for x
    x = 4,840,112,355.36/66,290.80
  6. Step 6: Final answer
    x = 73,013.33

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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.