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Finding the Fourth Proportional to 70,168.66, 105,241.84 and 23,421.54

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Solution

The fourth proportional to 70,168.66, 105,241.84 and 23,421.54 is: 35,128.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,168.66 : 105,241.84 = 23,421.54 : x
  2. Step 2: Convert to fraction form
    70,168.66/105,241.84 = 23,421.54/x
  3. Step 3: Cross multiply
    70,168.66x = 105,241.84 × 23,421.54
  4. Step 4: Simplify right side
    70,168.66x = 2,464,925,965.23
  5. Step 5: Solve for x
    x = 2,464,925,965.23/70,168.66
  6. Step 6: Final answer
    x = 35,128.59

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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.