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Finding the Fourth Proportional to 70,558.53, 105,837.90 and 17,250.39

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Solution

The fourth proportional to 70,558.53, 105,837.90 and 17,250.39 is: 25,875.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,558.53 : 105,837.90 = 17,250.39 : x
  2. Step 2: Convert to fraction form
    70,558.53/105,837.90 = 17,250.39/x
  3. Step 3: Cross multiply
    70,558.53x = 105,837.90 × 17,250.39
  4. Step 4: Simplify right side
    70,558.53x = 1,825,745,051.78
  5. Step 5: Solve for x
    x = 1,825,745,051.78/70,558.53
  6. Step 6: Final answer
    x = 25,875.61

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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.