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Finding the Fourth Proportional to 661,739.09, 992,311.56 and 188,311.91

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Solution

The fourth proportional to 661,739.09, 992,311.56 and 188,311.91 is: 282,383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,739.09 : 992,311.56 = 188,311.91 : x
  2. Step 2: Convert to fraction form
    661,739.09/992,311.56 = 188,311.91/x
  3. Step 3: Cross multiply
    661,739.09x = 992,311.56 × 188,311.91
  4. Step 4: Simplify right side
    661,739.09x = 186,864,080,217.12
  5. Step 5: Solve for x
    x = 186,864,080,217.12/661,739.09
  6. Step 6: Final answer
    x = 282,383.32

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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.