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Finding the Fourth Proportional to 661,225.92, 991,847.16 and 187,910.64

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Solution

The fourth proportional to 661,225.92, 991,847.16 and 187,910.64 is: 281,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,225.92 : 991,847.16 = 187,910.64 : x
  2. Step 2: Convert to fraction form
    661,225.92/991,847.16 = 187,910.64/x
  3. Step 3: Cross multiply
    661,225.92x = 991,847.16 × 187,910.64
  4. Step 4: Simplify right side
    661,225.92x = 186,378,634,617.78
  5. Step 5: Solve for x
    x = 186,378,634,617.78/661,225.92
  6. Step 6: Final answer
    x = 281,868.31

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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.