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Finding the Fourth Proportional to 61,894.01, 92,845.94 and 19,780.08

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Solution

The fourth proportional to 61,894.01, 92,845.94 and 19,780.08 is: 29,671.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,894.01 : 92,845.94 = 19,780.08 : x
  2. Step 2: Convert to fraction form
    61,894.01/92,845.94 = 19,780.08/x
  3. Step 3: Cross multiply
    61,894.01x = 92,845.94 × 19,780.08
  4. Step 4: Simplify right side
    61,894.01x = 1,836,500,021.97
  5. Step 5: Solve for x
    x = 1,836,500,021.97/61,894.01
  6. Step 6: Final answer
    x = 29,671.69

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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.