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Finding the Fourth Proportional to 54,314.64, 81,100.40 and 48,655.78

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Solution

The fourth proportional to 54,314.64, 81,100.40 and 48,655.78 is: 72,650.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,314.64 : 81,100.40 = 48,655.78 : x
  2. Step 2: Convert to fraction form
    54,314.64/81,100.40 = 48,655.78/x
  3. Step 3: Cross multiply
    54,314.64x = 81,100.40 × 48,655.78
  4. Step 4: Simplify right side
    54,314.64x = 3,946,002,774.28
  5. Step 5: Solve for x
    x = 3,946,002,774.28/54,314.64
  6. Step 6: Final answer
    x = 72,650.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.