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Finding the Fourth Proportional to 56,954.80, 78,026.78 and 54,825.11

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Solution

The fourth proportional to 56,954.80, 78,026.78 and 54,825.11 is: 75,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,954.80 : 78,026.78 = 54,825.11 : x
  2. Step 2: Convert to fraction form
    56,954.80/78,026.78 = 54,825.11/x
  3. Step 3: Cross multiply
    56,954.80x = 78,026.78 × 54,825.11
  4. Step 4: Simplify right side
    56,954.80x = 4,277,826,796.45
  5. Step 5: Solve for x
    x = 4,277,826,796.45/56,954.80
  6. Step 6: Final answer
    x = 75,109.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.