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Finding the Fourth Proportional to 61,512.60, 92,139.30 and 49,848.60

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Solution

The fourth proportional to 61,512.60, 92,139.30 and 49,848.60 is: 74,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,512.60 : 92,139.30 = 49,848.60 : x
  2. Step 2: Convert to fraction form
    61,512.60/92,139.30 = 49,848.60/x
  3. Step 3: Cross multiply
    61,512.60x = 92,139.30 × 49,848.60
  4. Step 4: Simplify right side
    61,512.60x = 4,593,015,109.98
  5. Step 5: Solve for x
    x = 4,593,015,109.98/61,512.60
  6. Step 6: Final answer
    x = 74,667.87

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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.