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Finding the Fourth Proportional to 683,578.40, 943,603.91 and 611,833.86

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Solution

The fourth proportional to 683,578.40, 943,603.91 and 611,833.86 is: 844,568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,578.40 : 943,603.91 = 611,833.86 : x
  2. Step 2: Convert to fraction form
    683,578.40/943,603.91 = 611,833.86/x
  3. Step 3: Cross multiply
    683,578.40x = 943,603.91 × 611,833.86
  4. Step 4: Simplify right side
    683,578.40x = 577,328,822,566.39
  5. Step 5: Solve for x
    x = 577,328,822,566.39/683,578.40
  6. Step 6: Final answer
    x = 844,568.56

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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.