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Finding the Fourth Proportional to 386,412.52, 579,744.54 and 186,755.56

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Solution

The fourth proportional to 386,412.52, 579,744.54 and 186,755.56 is: 280,194.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,412.52 : 579,744.54 = 186,755.56 : x
  2. Step 2: Convert to fraction form
    386,412.52/579,744.54 = 186,755.56/x
  3. Step 3: Cross multiply
    386,412.52x = 579,744.54 × 186,755.56
  4. Step 4: Simplify right side
    386,412.52x = 108,270,516,224.64
  5. Step 5: Solve for x
    x = 108,270,516,224.64/386,412.52
  6. Step 6: Final answer
    x = 280,194.12

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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.