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Finding the Fourth Proportional to 71,019.04, 106,522.08 and 65,450.56

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Solution

The fourth proportional to 71,019.04, 106,522.08 and 65,450.56 is: 98,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.04 : 106,522.08 = 65,450.56 : x
  2. Step 2: Convert to fraction form
    71,019.04/106,522.08 = 65,450.56/x
  3. Step 3: Cross multiply
    71,019.04x = 106,522.08 × 65,450.56
  4. Step 4: Simplify right side
    71,019.04x = 6,971,929,788.36
  5. Step 5: Solve for x
    x = 6,971,929,788.36/71,019.04
  6. Step 6: Final answer
    x = 98,169.87

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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.