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Finding the Fourth Proportional to 188,665.80, 282,990.60 and 64,006.80

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Solution

The fourth proportional to 188,665.80, 282,990.60 and 64,006.80 is: 96,007.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,665.80 : 282,990.60 = 64,006.80 : x
  2. Step 2: Convert to fraction form
    188,665.80/282,990.60 = 64,006.80/x
  3. Step 3: Cross multiply
    188,665.80x = 282,990.60 × 64,006.80
  4. Step 4: Simplify right side
    188,665.80x = 18,113,322,736.08
  5. Step 5: Solve for x
    x = 18,113,322,736.08/188,665.80
  6. Step 6: Final answer
    x = 96,007.45

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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.