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Finding the Fourth Proportional to 48,749.64, 73,118.79 and 13,692.30

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Solution

The fourth proportional to 48,749.64, 73,118.79 and 13,692.30 is: 20,536.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,749.64 : 73,118.79 = 13,692.30 : x
  2. Step 2: Convert to fraction form
    48,749.64/73,118.79 = 13,692.30/x
  3. Step 3: Cross multiply
    48,749.64x = 73,118.79 × 13,692.30
  4. Step 4: Simplify right side
    48,749.64x = 1,001,164,408.32
  5. Step 5: Solve for x
    x = 1,001,164,408.32/48,749.64
  6. Step 6: Final answer
    x = 20,536.86

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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.