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Finding the Fourth Proportional to 583,640.13, 805,435.70 and 328,991.25

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Solution

The fourth proportional to 583,640.13, 805,435.70 and 328,991.25 is: 454,014.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,640.13 : 805,435.70 = 328,991.25 : x
  2. Step 2: Convert to fraction form
    583,640.13/805,435.70 = 328,991.25/x
  3. Step 3: Cross multiply
    583,640.13x = 805,435.70 × 328,991.25
  4. Step 4: Simplify right side
    583,640.13x = 264,981,297,737.63
  5. Step 5: Solve for x
    x = 264,981,297,737.63/583,640.13
  6. Step 6: Final answer
    x = 454,014.87

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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.