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Finding the Fourth Proportional to 565,578.54, 780,238.31 and 501,113.07

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Solution

The fourth proportional to 565,578.54, 780,238.31 and 501,113.07 is: 691,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,578.54 : 780,238.31 = 501,113.07 : x
  2. Step 2: Convert to fraction form
    565,578.54/780,238.31 = 501,113.07/x
  3. Step 3: Cross multiply
    565,578.54x = 780,238.31 × 501,113.07
  4. Step 4: Simplify right side
    565,578.54x = 390,987,612,350.15
  5. Step 5: Solve for x
    x = 390,987,612,350.15/565,578.54
  6. Step 6: Final answer
    x = 691,305.60

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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.