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Finding the Fourth Proportional to 769,908.30, 1,062,480.30 and 425,767.50

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Solution

The fourth proportional to 769,908.30, 1,062,480.30 and 425,767.50 is: 587,562.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,908.30 : 1,062,480.30 = 425,767.50 : x
  2. Step 2: Convert to fraction form
    769,908.30/1,062,480.30 = 425,767.50/x
  3. Step 3: Cross multiply
    769,908.30x = 1,062,480.30 × 425,767.50
  4. Step 4: Simplify right side
    769,908.30x = 452,369,581,130.25
  5. Step 5: Solve for x
    x = 452,369,581,130.25/769,908.30
  6. Step 6: Final answer
    x = 587,562.94

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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.