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Finding the Fourth Proportional to 61,236, 91,841.92 and 16,851.36

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Solution

The fourth proportional to 61,236, 91,841.92 and 16,851.36 is: 25,273.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,236 : 91,841.92 = 16,851.36 : x
  2. Step 2: Convert to fraction form
    61,236/91,841.92 = 16,851.36/x
  3. Step 3: Cross multiply
    61,236x = 91,841.92 × 16,851.36
  4. Step 4: Simplify right side
    61,236x = 1,547,661,257.01
  5. Step 5: Solve for x
    x = 1,547,661,257.01/61,236
  6. Step 6: Final answer
    x = 25,273.72

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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.