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Finding the Fourth Proportional to 666,629, 999,943.52 and 167,993

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Solution

The fourth proportional to 666,629, 999,943.52 and 167,993 is: 251,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,629 : 999,943.52 = 167,993 : x
  2. Step 2: Convert to fraction form
    666,629/999,943.52 = 167,993/x
  3. Step 3: Cross multiply
    666,629x = 999,943.52 × 167,993
  4. Step 4: Simplify right side
    666,629x = 167,983,511,755.36
  5. Step 5: Solve for x
    x = 167,983,511,755.36/666,629
  6. Step 6: Final answer
    x = 251,989.51

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1.5x scale

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.