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Finding the Fourth Proportional to 85,692.95, 118,257.53 and 49,374.37

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Solution

The fourth proportional to 85,692.95, 118,257.53 and 49,374.37 is: 68,137.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,692.95 : 118,257.53 = 49,374.37 : x
  2. Step 2: Convert to fraction form
    85,692.95/118,257.53 = 49,374.37/x
  3. Step 3: Cross multiply
    85,692.95x = 118,257.53 × 49,374.37
  4. Step 4: Simplify right side
    85,692.95x = 5,838,890,498.99
  5. Step 5: Solve for x
    x = 5,838,890,498.99/85,692.95
  6. Step 6: Final answer
    x = 68,137.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.