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Finding the Fourth Proportional to 143,235.23, 214,642.54 and 72,060.03

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Solution

The fourth proportional to 143,235.23, 214,642.54 and 72,060.03 is: 107,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,235.23 : 214,642.54 = 72,060.03 : x
  2. Step 2: Convert to fraction form
    143,235.23/214,642.54 = 72,060.03/x
  3. Step 3: Cross multiply
    143,235.23x = 214,642.54 × 72,060.03
  4. Step 4: Simplify right side
    143,235.23x = 15,467,147,871.68
  5. Step 5: Solve for x
    x = 15,467,147,871.68/143,235.23
  6. Step 6: Final answer
    x = 107,984.24

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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.