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Finding the Fourth Proportional to 1,891,920.16, 2,835,415.92 and 768,676

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Solution

The fourth proportional to 1,891,920.16, 2,835,415.92 and 768,676 is: 1,152,012.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891,920.16 : 2,835,415.92 = 768,676 : x
  2. Step 2: Convert to fraction form
    1,891,920.16/2,835,415.92 = 768,676/x
  3. Step 3: Cross multiply
    1,891,920.16x = 2,835,415.92 × 768,676
  4. Step 4: Simplify right side
    1,891,920.16x = 2,179,516,167,721.92
  5. Step 5: Solve for x
    x = 2,179,516,167,721.92/1,891,920.16
  6. Step 6: Final answer
    x = 1,152,012.76

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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.