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Finding the Fourth Proportional to 65,963.73, 91,025.44 and 42,087.76

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Solution

The fourth proportional to 65,963.73, 91,025.44 and 42,087.76 is: 58,078.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,963.73 : 91,025.44 = 42,087.76 : x
  2. Step 2: Convert to fraction form
    65,963.73/91,025.44 = 42,087.76/x
  3. Step 3: Cross multiply
    65,963.73x = 91,025.44 × 42,087.76
  4. Step 4: Simplify right side
    65,963.73x = 3,831,056,872.61
  5. Step 5: Solve for x
    x = 3,831,056,872.61/65,963.73
  6. Step 6: Final answer
    x = 58,078.23

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1.5x scale

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.