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Finding the Fourth Proportional to 71,559.75, 107,356.50 and 70,369.68

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Solution

The fourth proportional to 71,559.75, 107,356.50 and 70,369.68 is: 105,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,559.75 : 107,356.50 = 70,369.68 : x
  2. Step 2: Convert to fraction form
    71,559.75/107,356.50 = 70,369.68/x
  3. Step 3: Cross multiply
    71,559.75x = 107,356.50 × 70,369.68
  4. Step 4: Simplify right side
    71,559.75x = 7,554,642,550.92
  5. Step 5: Solve for x
    x = 7,554,642,550.92/71,559.75
  6. Step 6: Final answer
    x = 105,571.11

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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.