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Finding the Fourth Proportional to 98,327.91, 135,692.67 and 55,886.45

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Solution

The fourth proportional to 98,327.91, 135,692.67 and 55,886.45 is: 77,123.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,327.91 : 135,692.67 = 55,886.45 : x
  2. Step 2: Convert to fraction form
    98,327.91/135,692.67 = 55,886.45/x
  3. Step 3: Cross multiply
    98,327.91x = 135,692.67 × 55,886.45
  4. Step 4: Simplify right side
    98,327.91x = 7,583,380,938.86
  5. Step 5: Solve for x
    x = 7,583,380,938.86/98,327.91
  6. Step 6: Final answer
    x = 77,123.38

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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.