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Finding the Fourth Proportional to 71,402.35, 106,990.87 and 26,361.77

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Solution

The fourth proportional to 71,402.35, 106,990.87 and 26,361.77 is: 39,501.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,402.35 : 106,990.87 = 26,361.77 : x
  2. Step 2: Convert to fraction form
    71,402.35/106,990.87 = 26,361.77/x
  3. Step 3: Cross multiply
    71,402.35x = 106,990.87 × 26,361.77
  4. Step 4: Simplify right side
    71,402.35x = 2,820,468,707.04
  5. Step 5: Solve for x
    x = 2,820,468,707.04/71,402.35
  6. Step 6: Final answer
    x = 39,501.06

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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.