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Finding the Fourth Proportional to 873,662.78, 1,205,643.12 and 481,188.19

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Solution

The fourth proportional to 873,662.78, 1,205,643.12 and 481,188.19 is: 664,033.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,662.78 : 1,205,643.12 = 481,188.19 : x
  2. Step 2: Convert to fraction form
    873,662.78/1,205,643.12 = 481,188.19/x
  3. Step 3: Cross multiply
    873,662.78x = 1,205,643.12 × 481,188.19
  4. Step 4: Simplify right side
    873,662.78x = 580,141,230,698.75
  5. Step 5: Solve for x
    x = 580,141,230,698.75/873,662.78
  6. Step 6: Final answer
    x = 664,033.36

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Double scale
Find fourth proportional to 873,663.78, 1,205,644.50 and 481,189.19
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1.5x scale

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.