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Finding the Fourth Proportional to 626,395.32, 864,796.77 and 411,905.30

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Solution

The fourth proportional to 626,395.32, 864,796.77 and 411,905.30 is: 568,673.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,395.32 : 864,796.77 = 411,905.30 : x
  2. Step 2: Convert to fraction form
    626,395.32/864,796.77 = 411,905.30/x
  3. Step 3: Cross multiply
    626,395.32x = 864,796.77 × 411,905.30
  4. Step 4: Simplify right side
    626,395.32x = 356,214,368,661.90
  5. Step 5: Solve for x
    x = 356,214,368,661.90/626,395.32
  6. Step 6: Final answer
    x = 568,673.42

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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.