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Finding the Fourth Proportional to 1,916,978.58, 2,645,299.54 and 1,057,553.18

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Solution

The fourth proportional to 1,916,978.58, 2,645,299.54 and 1,057,553.18 is: 1,459,351.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916,978.58 : 2,645,299.54 = 1,057,553.18 : x
  2. Step 2: Convert to fraction form
    1,916,978.58/2,645,299.54 = 1,057,553.18/x
  3. Step 3: Cross multiply
    1,916,978.58x = 2,645,299.54 × 1,057,553.18
  4. Step 4: Simplify right side
    1,916,978.58x = 2,797,544,940,579.54
  5. Step 5: Solve for x
    x = 2,797,544,940,579.54/1,916,978.58
  6. Step 6: Final answer
    x = 1,459,351.17

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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.