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Finding the Fourth Proportional to 71,019.70, 106,529.55 and 26,647.90

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Solution

The fourth proportional to 71,019.70, 106,529.55 and 26,647.90 is: 39,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.70 : 106,529.55 = 26,647.90 : x
  2. Step 2: Convert to fraction form
    71,019.70/106,529.55 = 26,647.90/x
  3. Step 3: Cross multiply
    71,019.70x = 106,529.55 × 26,647.90
  4. Step 4: Simplify right side
    71,019.70x = 2,838,788,795.45
  5. Step 5: Solve for x
    x = 2,838,788,795.45/71,019.70
  6. Step 6: Final answer
    x = 39,971.85

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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.