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Finding the Fourth Proportional to 638,449.75, 957,689.21 and 189,162.19

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Solution

The fourth proportional to 638,449.75, 957,689.21 and 189,162.19 is: 283,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,449.75 : 957,689.21 = 189,162.19 : x
  2. Step 2: Convert to fraction form
    638,449.75/957,689.21 = 189,162.19/x
  3. Step 3: Cross multiply
    638,449.75x = 957,689.21 × 189,162.19
  4. Step 4: Simplify right side
    638,449.75x = 181,158,588,302.97
  5. Step 5: Solve for x
    x = 181,158,588,302.97/638,449.75
  6. Step 6: Final answer
    x = 283,747.61

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1.5x scale

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.