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Finding the Fourth Proportional to 61,143.07, 91,712.44 and 16,769.11

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Solution

The fourth proportional to 61,143.07, 91,712.44 and 16,769.11 is: 25,153.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,143.07 : 91,712.44 = 16,769.11 : x
  2. Step 2: Convert to fraction form
    61,143.07/91,712.44 = 16,769.11/x
  3. Step 3: Cross multiply
    61,143.07x = 91,712.44 × 16,769.11
  4. Step 4: Simplify right side
    61,143.07x = 1,537,935,994.73
  5. Step 5: Solve for x
    x = 1,537,935,994.73/61,143.07
  6. Step 6: Final answer
    x = 25,153.07

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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.