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Finding the Fourth Proportional to 124,324.66, 186,485.60 and 74,418.70

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Solution

The fourth proportional to 124,324.66, 186,485.60 and 74,418.70 is: 111,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,324.66 : 186,485.60 = 74,418.70 : x
  2. Step 2: Convert to fraction form
    124,324.66/186,485.60 = 74,418.70/x
  3. Step 3: Cross multiply
    124,324.66x = 186,485.60 × 74,418.70
  4. Step 4: Simplify right side
    124,324.66x = 13,878,015,920.72
  5. Step 5: Solve for x
    x = 13,878,015,920.72/124,324.66
  6. Step 6: Final answer
    x = 111,627.22

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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.