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Finding the Fourth Proportional to 407,169.56, 610,655.92 and 170,689.25

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Solution

The fourth proportional to 407,169.56, 610,655.92 and 170,689.25 is: 255,992.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,169.56 : 610,655.92 = 170,689.25 : x
  2. Step 2: Convert to fraction form
    407,169.56/610,655.92 = 170,689.25/x
  3. Step 3: Cross multiply
    407,169.56x = 610,655.92 × 170,689.25
  4. Step 4: Simplify right side
    407,169.56x = 104,232,400,992.86
  5. Step 5: Solve for x
    x = 104,232,400,992.86/407,169.56
  6. Step 6: Final answer
    x = 255,992.62

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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.