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Finding the Fourth Proportional to 69,381.53, 104,113.81 and 29,938.64

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Solution

The fourth proportional to 69,381.53, 104,113.81 and 29,938.64 is: 44,925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,381.53 : 104,113.81 = 29,938.64 : x
  2. Step 2: Convert to fraction form
    69,381.53/104,113.81 = 29,938.64/x
  3. Step 3: Cross multiply
    69,381.53x = 104,113.81 × 29,938.64
  4. Step 4: Simplify right side
    69,381.53x = 3,117,025,876.62
  5. Step 5: Solve for x
    x = 3,117,025,876.62/69,381.53
  6. Step 6: Final answer
    x = 44,925.87

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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.