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Finding the Fourth Proportional to 620,540.40, 856,447.40 and 517,010.52

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Solution

The fourth proportional to 620,540.40, 856,447.40 and 517,010.52 is: 713,559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,540.40 : 856,447.40 = 517,010.52 : x
  2. Step 2: Convert to fraction form
    620,540.40/856,447.40 = 517,010.52/x
  3. Step 3: Cross multiply
    620,540.40x = 856,447.40 × 517,010.52
  4. Step 4: Simplify right side
    620,540.40x = 442,792,315,626.65
  5. Step 5: Solve for x
    x = 442,792,315,626.65/620,540.40
  6. Step 6: Final answer
    x = 713,559.21

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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.