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Finding the Fourth Proportional to 665,104.78, 997,804.80 and 191,753.20

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Solution

The fourth proportional to 665,104.78, 997,804.80 and 191,753.20 is: 287,672.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,104.78 : 997,804.80 = 191,753.20 : x
  2. Step 2: Convert to fraction form
    665,104.78/997,804.80 = 191,753.20/x
  3. Step 3: Cross multiply
    665,104.78x = 997,804.80 × 191,753.20
  4. Step 4: Simplify right side
    665,104.78x = 191,332,263,375.36
  5. Step 5: Solve for x
    x = 191,332,263,375.36/665,104.78
  6. Step 6: Final answer
    x = 287,672.36

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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.