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Finding the Fourth Proportional to 270,583.35, 405,809.40 and 112,725.69

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Solution

The fourth proportional to 270,583.35, 405,809.40 and 112,725.69 is: 169,061.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,583.35 : 405,809.40 = 112,725.69 : x
  2. Step 2: Convert to fraction form
    270,583.35/405,809.40 = 112,725.69/x
  3. Step 3: Cross multiply
    270,583.35x = 405,809.40 × 112,725.69
  4. Step 4: Simplify right side
    270,583.35x = 45,745,143,524.42
  5. Step 5: Solve for x
    x = 45,745,143,524.42/270,583.35
  6. Step 6: Final answer
    x = 169,061.19

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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.