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Finding the Fourth Proportional to 1,976,919.56, 2,963,256.72 and 838,721.12

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Solution

The fourth proportional to 1,976,919.56, 2,963,256.72 and 838,721.12 is: 1,257,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,976,919.56 : 2,963,256.72 = 838,721.12 : x
  2. Step 2: Convert to fraction form
    1,976,919.56/2,963,256.72 = 838,721.12/x
  3. Step 3: Cross multiply
    1,976,919.56x = 2,963,256.72 × 838,721.12
  4. Step 4: Simplify right side
    1,976,919.56x = 2,485,345,995,045.93
  5. Step 5: Solve for x
    x = 2,485,345,995,045.93/1,976,919.56
  6. Step 6: Final answer
    x = 1,257,181.14

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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.