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Finding the Fourth Proportional to 101,487.96, 140,051.38 and 56,163.30

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Solution

The fourth proportional to 101,487.96, 140,051.38 and 56,163.30 is: 77,504.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,487.96 : 140,051.38 = 56,163.30 : x
  2. Step 2: Convert to fraction form
    101,487.96/140,051.38 = 56,163.30/x
  3. Step 3: Cross multiply
    101,487.96x = 140,051.38 × 56,163.30
  4. Step 4: Simplify right side
    101,487.96x = 7,865,747,503.95
  5. Step 5: Solve for x
    x = 7,865,747,503.95/101,487.96
  6. Step 6: Final answer
    x = 77,504.24

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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.