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Finding the Fourth Proportional to 70,144.57, 105,216.81 and 17,554.02

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Solution

The fourth proportional to 70,144.57, 105,216.81 and 17,554.02 is: 26,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,144.57 : 105,216.81 = 17,554.02 : x
  2. Step 2: Convert to fraction form
    70,144.57/105,216.81 = 17,554.02/x
  3. Step 3: Cross multiply
    70,144.57x = 105,216.81 × 17,554.02
  4. Step 4: Simplify right side
    70,144.57x = 1,846,977,987.08
  5. Step 5: Solve for x
    x = 1,846,977,987.08/70,144.57
  6. Step 6: Final answer
    x = 26,331.02

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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.