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Finding the Fourth Proportional to 61,951.67, 92,931.86 and 19,251.36

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Solution

The fourth proportional to 61,951.67, 92,931.86 and 19,251.36 is: 28,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,951.67 : 92,931.86 = 19,251.36 : x
  2. Step 2: Convert to fraction form
    61,951.67/92,931.86 = 19,251.36/x
  3. Step 3: Cross multiply
    61,951.67x = 92,931.86 × 19,251.36
  4. Step 4: Simplify right side
    61,951.67x = 1,789,064,596.07
  5. Step 5: Solve for x
    x = 1,789,064,596.07/61,951.67
  6. Step 6: Final answer
    x = 28,878.39

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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.