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Finding the Fourth Proportional to 74,730.88, 103,157.40 and 54,746.48

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Solution

The fourth proportional to 74,730.88, 103,157.40 and 54,746.48 is: 75,571.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,730.88 : 103,157.40 = 54,746.48 : x
  2. Step 2: Convert to fraction form
    74,730.88/103,157.40 = 54,746.48/x
  3. Step 3: Cross multiply
    74,730.88x = 103,157.40 × 54,746.48
  4. Step 4: Simplify right side
    74,730.88x = 5,647,504,535.95
  5. Step 5: Solve for x
    x = 5,647,504,535.95/74,730.88
  6. Step 6: Final answer
    x = 75,571.23

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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.