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Finding the Fourth Proportional to 407,732.69, 611,551.47 and 108,236.54

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Solution

The fourth proportional to 407,732.69, 611,551.47 and 108,236.54 is: 162,342.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,732.69 : 611,551.47 = 108,236.54 : x
  2. Step 2: Convert to fraction form
    407,732.69/611,551.47 = 108,236.54/x
  3. Step 3: Cross multiply
    407,732.69x = 611,551.47 × 108,236.54
  4. Step 4: Simplify right side
    407,732.69x = 66,192,215,144.71
  5. Step 5: Solve for x
    x = 66,192,215,144.71/407,732.69
  6. Step 6: Final answer
    x = 162,342.18

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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.