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Finding the Fourth Proportional to 35,318.79, 52,978.19 and 11,961.63

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Solution

The fourth proportional to 35,318.79, 52,978.19 and 11,961.63 is: 17,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,318.79 : 52,978.19 = 11,961.63 : x
  2. Step 2: Convert to fraction form
    35,318.79/52,978.19 = 11,961.63/x
  3. Step 3: Cross multiply
    35,318.79x = 52,978.19 × 11,961.63
  4. Step 4: Simplify right side
    35,318.79x = 633,705,447.04
  5. Step 5: Solve for x
    x = 633,705,447.04/35,318.79
  6. Step 6: Final answer
    x = 17,942.45

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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.