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Finding the Fourth Proportional to 50,961.68, 70,361.40 and 39,003.68

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Solution

The fourth proportional to 50,961.68, 70,361.40 and 39,003.68 is: 53,851.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,961.68 : 70,361.40 = 39,003.68 : x
  2. Step 2: Convert to fraction form
    50,961.68/70,361.40 = 39,003.68/x
  3. Step 3: Cross multiply
    50,961.68x = 70,361.40 × 39,003.68
  4. Step 4: Simplify right side
    50,961.68x = 2,744,353,529.95
  5. Step 5: Solve for x
    x = 2,744,353,529.95/50,961.68
  6. Step 6: Final answer
    x = 53,851.32

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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.