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Finding the Fourth Proportional to 1,214,612, 1,676,164.68 and 678,068

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Solution

The fourth proportional to 1,214,612, 1,676,164.68 and 678,068 is: 935,733.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,612 : 1,676,164.68 = 678,068 : x
  2. Step 2: Convert to fraction form
    1,214,612/1,676,164.68 = 678,068/x
  3. Step 3: Cross multiply
    1,214,612x = 1,676,164.68 × 678,068
  4. Step 4: Simplify right side
    1,214,612x = 1,136,553,632,238.24
  5. Step 5: Solve for x
    x = 1,136,553,632,238.24/1,214,612
  6. Step 6: Final answer
    x = 935,733.91

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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.