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Finding the Fourth Proportional to 70,039.26, 105,009.48 and 34,954.20

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Solution

The fourth proportional to 70,039.26, 105,009.48 and 34,954.20 is: 52,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,039.26 : 105,009.48 = 34,954.20 : x
  2. Step 2: Convert to fraction form
    70,039.26/105,009.48 = 34,954.20/x
  3. Step 3: Cross multiply
    70,039.26x = 105,009.48 × 34,954.20
  4. Step 4: Simplify right side
    70,039.26x = 3,670,522,365.82
  5. Step 5: Solve for x
    x = 3,670,522,365.82/70,039.26
  6. Step 6: Final answer
    x = 52,406.64

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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.