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Finding the Fourth Proportional to 444,417, 666,625.50 and 111,993

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Solution

The fourth proportional to 444,417, 666,625.50 and 111,993 is: 167,989.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,417 : 666,625.50 = 111,993 : x
  2. Step 2: Convert to fraction form
    444,417/666,625.50 = 111,993/x
  3. Step 3: Cross multiply
    444,417x = 666,625.50 × 111,993
  4. Step 4: Simplify right side
    444,417x = 74,657,389,621.50
  5. Step 5: Solve for x
    x = 74,657,389,621.50/444,417
  6. Step 6: Final answer
    x = 167,989.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.