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Finding the Fourth Proportional to 1,383,511, 1,909,274.38 and 779,899

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Solution

The fourth proportional to 1,383,511, 1,909,274.38 and 779,899 is: 1,076,277.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,511 : 1,909,274.38 = 779,899 : x
  2. Step 2: Convert to fraction form
    1,383,511/1,909,274.38 = 779,899/x
  3. Step 3: Cross multiply
    1,383,511x = 1,909,274.38 × 779,899
  4. Step 4: Simplify right side
    1,383,511x = 1,489,041,179,687.62
  5. Step 5: Solve for x
    x = 1,489,041,179,687.62/1,383,511
  6. Step 6: Final answer
    x = 1,076,277.08

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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.