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Finding the Fourth Proportional to 1,856,791, 2,786,430.66 and 674,839

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Solution

The fourth proportional to 1,856,791, 2,786,430.66 and 674,839 is: 1,012,710.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856,791 : 2,786,430.66 = 674,839 : x
  2. Step 2: Convert to fraction form
    1,856,791/2,786,430.66 = 674,839/x
  3. Step 3: Cross multiply
    1,856,791x = 2,786,430.66 × 674,839
  4. Step 4: Simplify right side
    1,856,791x = 1,880,392,080,163.74
  5. Step 5: Solve for x
    x = 1,880,392,080,163.74/1,856,791
  6. Step 6: Final answer
    x = 1,012,710.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.