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Finding the Fourth Proportional to 70,090.89, 105,133.59 and 23,343.75

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Solution

The fourth proportional to 70,090.89, 105,133.59 and 23,343.75 is: 35,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,090.89 : 105,133.59 = 23,343.75 : x
  2. Step 2: Convert to fraction form
    70,090.89/105,133.59 = 23,343.75/x
  3. Step 3: Cross multiply
    70,090.89x = 105,133.59 × 23,343.75
  4. Step 4: Simplify right side
    70,090.89x = 2,454,212,241.56
  5. Step 5: Solve for x
    x = 2,454,212,241.56/70,090.89
  6. Step 6: Final answer
    x = 35,014.71

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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.