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Finding the Fourth Proportional to 188,679.80, 283,011.60 and 64,020.80

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Solution

The fourth proportional to 188,679.80, 283,011.60 and 64,020.80 is: 96,028.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,679.80 : 283,011.60 = 64,020.80 : x
  2. Step 2: Convert to fraction form
    188,679.80/283,011.60 = 64,020.80/x
  3. Step 3: Cross multiply
    188,679.80x = 283,011.60 × 64,020.80
  4. Step 4: Simplify right side
    188,679.80x = 18,118,629,041.28
  5. Step 5: Solve for x
    x = 18,118,629,041.28/188,679.80
  6. Step 6: Final answer
    x = 96,028.45

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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.