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Finding the Fourth Proportional to 105,021.96, 157,357.60 and 73,801.32

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Solution

The fourth proportional to 105,021.96, 157,357.60 and 73,801.32 is: 110,578.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,021.96 : 157,357.60 = 73,801.32 : x
  2. Step 2: Convert to fraction form
    105,021.96/157,357.60 = 73,801.32/x
  3. Step 3: Cross multiply
    105,021.96x = 157,357.60 × 73,801.32
  4. Step 4: Simplify right side
    105,021.96x = 11,613,198,592.03
  5. Step 5: Solve for x
    x = 11,613,198,592.03/105,021.96
  6. Step 6: Final answer
    x = 110,578.76

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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.