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Finding the Fourth Proportional to 170,406.57, 255,606.21 and 45,747.57

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Solution

The fourth proportional to 170,406.57, 255,606.21 and 45,747.57 is: 68,620.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,406.57 : 255,606.21 = 45,747.57 : x
  2. Step 2: Convert to fraction form
    170,406.57/255,606.21 = 45,747.57/x
  3. Step 3: Cross multiply
    170,406.57x = 255,606.21 × 45,747.57
  4. Step 4: Simplify right side
    170,406.57x = 11,693,362,984.41
  5. Step 5: Solve for x
    x = 11,693,362,984.41/170,406.57
  6. Step 6: Final answer
    x = 68,620.38

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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.