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Finding the Fourth Proportional to 69,657.54, 103,752.31 and 68,199.54

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Solution

The fourth proportional to 69,657.54, 103,752.31 and 68,199.54 is: 101,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,657.54 : 103,752.31 = 68,199.54 : x
  2. Step 2: Convert to fraction form
    69,657.54/103,752.31 = 68,199.54/x
  3. Step 3: Cross multiply
    69,657.54x = 103,752.31 × 68,199.54
  4. Step 4: Simplify right side
    69,657.54x = 7,075,859,815.94
  5. Step 5: Solve for x
    x = 7,075,859,815.94/69,657.54
  6. Step 6: Final answer
    x = 101,580.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.