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Finding the Fourth Proportional to 539,375.86, 744,335.52 and 313,016.50

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Solution

The fourth proportional to 539,375.86, 744,335.52 and 313,016.50 is: 431,960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,375.86 : 744,335.52 = 313,016.50 : x
  2. Step 2: Convert to fraction form
    539,375.86/744,335.52 = 313,016.50/x
  3. Step 3: Cross multiply
    539,375.86x = 744,335.52 × 313,016.50
  4. Step 4: Simplify right side
    539,375.86x = 232,989,299,296.08
  5. Step 5: Solve for x
    x = 232,989,299,296.08/539,375.86
  6. Step 6: Final answer
    x = 431,960.93

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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.