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Finding the Fourth Proportional to 70,138.58, 105,207.80 and 17,548.02

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Solution

The fourth proportional to 70,138.58, 105,207.80 and 17,548.02 is: 26,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,138.58 : 105,207.80 = 17,548.02 : x
  2. Step 2: Convert to fraction form
    70,138.58/105,207.80 = 17,548.02/x
  3. Step 3: Cross multiply
    70,138.58x = 105,207.80 × 17,548.02
  4. Step 4: Simplify right side
    70,138.58x = 1,846,188,578.56
  5. Step 5: Solve for x
    x = 1,846,188,578.56/70,138.58
  6. Step 6: Final answer
    x = 26,322.01

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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.