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Finding the Fourth Proportional to 766,672.65, 1,057,290.66 and 605,911.77

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Solution

The fourth proportional to 766,672.65, 1,057,290.66 and 605,911.77 is: 835,591.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,672.65 : 1,057,290.66 = 605,911.77 : x
  2. Step 2: Convert to fraction form
    766,672.65/1,057,290.66 = 605,911.77/x
  3. Step 3: Cross multiply
    766,672.65x = 1,057,290.66 × 605,911.77
  4. Step 4: Simplify right side
    766,672.65x = 640,624,855,205.07
  5. Step 5: Solve for x
    x = 640,624,855,205.07/766,672.65
  6. Step 6: Final answer
    x = 835,591.12

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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.