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Finding the Fourth Proportional to 1,214,797, 1,676,523.54 and 678,356.68

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Solution

The fourth proportional to 1,214,797, 1,676,523.54 and 678,356.68 is: 936,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,797 : 1,676,523.54 = 678,356.68 : x
  2. Step 2: Convert to fraction form
    1,214,797/1,676,523.54 = 678,356.68/x
  3. Step 3: Cross multiply
    1,214,797x = 1,676,523.54 × 678,356.68
  4. Step 4: Simplify right side
    1,214,797x = 1,137,280,942,536.25
  5. Step 5: Solve for x
    x = 1,137,280,942,536.25/1,214,797
  6. Step 6: Final answer
    x = 936,190.11

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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.