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Finding the Fourth Proportional to 167,978.75, 251,973.03 and 43,319.75

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Solution

The fourth proportional to 167,978.75, 251,973.03 and 43,319.75 is: 64,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,978.75 : 251,973.03 = 43,319.75 : x
  2. Step 2: Convert to fraction form
    167,978.75/251,973.03 = 43,319.75/x
  3. Step 3: Cross multiply
    167,978.75x = 251,973.03 × 43,319.75
  4. Step 4: Simplify right side
    167,978.75x = 10,915,408,666.34
  5. Step 5: Solve for x
    x = 10,915,408,666.34/167,978.75
  6. Step 6: Final answer
    x = 64,980.89

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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.