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Finding the Fourth Proportional to 802,643.22, 1,107,692.90 and 476,149.54

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Solution

The fourth proportional to 802,643.22, 1,107,692.90 and 476,149.54 is: 657,113.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,643.22 : 1,107,692.90 = 476,149.54 : x
  2. Step 2: Convert to fraction form
    802,643.22/1,107,692.90 = 476,149.54/x
  3. Step 3: Cross multiply
    802,643.22x = 1,107,692.90 × 476,149.54
  4. Step 4: Simplify right side
    802,643.22x = 527,427,464,796.27
  5. Step 5: Solve for x
    x = 527,427,464,796.27/802,643.22
  6. Step 6: Final answer
    x = 657,113.21

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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.