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Finding the Fourth Proportional to 73,699.20, 101,692.80 and 45,403.20

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Solution

The fourth proportional to 73,699.20, 101,692.80 and 45,403.20 is: 62,648.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,699.20 : 101,692.80 = 45,403.20 : x
  2. Step 2: Convert to fraction form
    73,699.20/101,692.80 = 45,403.20/x
  3. Step 3: Cross multiply
    73,699.20x = 101,692.80 × 45,403.20
  4. Step 4: Simplify right side
    73,699.20x = 4,617,178,536.96
  5. Step 5: Solve for x
    x = 4,617,178,536.96/73,699.20
  6. Step 6: Final answer
    x = 62,648.96

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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.