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Finding the Fourth Proportional to 1,961,736.30, 2,940,417.45 and 763,260.30

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Solution

The fourth proportional to 1,961,736.30, 2,940,417.45 and 763,260.30 is: 1,144,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961,736.30 : 2,940,417.45 = 763,260.30 : x
  2. Step 2: Convert to fraction form
    1,961,736.30/2,940,417.45 = 763,260.30/x
  3. Step 3: Cross multiply
    1,961,736.30x = 2,940,417.45 × 763,260.30
  4. Step 4: Simplify right side
    1,961,736.30x = 2,244,303,905,012.24
  5. Step 5: Solve for x
    x = 2,244,303,905,012.24/1,961,736.30
  6. Step 6: Final answer
    x = 1,144,039.55

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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.