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Finding the Fourth Proportional to 61,153.51, 91,720.42 and 16,769.97

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Solution

The fourth proportional to 61,153.51, 91,720.42 and 16,769.97 is: 25,152.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,153.51 : 91,720.42 = 16,769.97 : x
  2. Step 2: Convert to fraction form
    61,153.51/91,720.42 = 16,769.97/x
  3. Step 3: Cross multiply
    61,153.51x = 91,720.42 × 16,769.97
  4. Step 4: Simplify right side
    61,153.51x = 1,538,148,691.79
  5. Step 5: Solve for x
    x = 1,538,148,691.79/61,153.51
  6. Step 6: Final answer
    x = 25,152.26

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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.