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Finding the Fourth Proportional to 769,846.95, 1,062,345.78 and 425,662.97

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Solution

The fourth proportional to 769,846.95, 1,062,345.78 and 425,662.97 is: 587,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,846.95 : 1,062,345.78 = 425,662.97 : x
  2. Step 2: Convert to fraction form
    769,846.95/1,062,345.78 = 425,662.97/x
  3. Step 3: Cross multiply
    769,846.95x = 1,062,345.78 × 425,662.97
  4. Step 4: Simplify right side
    769,846.95x = 452,201,254,570.04
  5. Step 5: Solve for x
    x = 452,201,254,570.04/769,846.95
  6. Step 6: Final answer
    x = 587,391.11

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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.