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Finding the Fourth Proportional to 426,708.72, 588,879.96 and 235,720.56

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Solution

The fourth proportional to 426,708.72, 588,879.96 and 235,720.56 is: 325,306.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,708.72 : 588,879.96 = 235,720.56 : x
  2. Step 2: Convert to fraction form
    426,708.72/588,879.96 = 235,720.56/x
  3. Step 3: Cross multiply
    426,708.72x = 588,879.96 × 235,720.56
  4. Step 4: Simplify right side
    426,708.72x = 138,811,113,943.98
  5. Step 5: Solve for x
    x = 138,811,113,943.98/426,708.72
  6. Step 6: Final answer
    x = 325,306.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.