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Finding the Fourth Proportional to 9,866.78, 14,795.28 and 3,626.54

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Solution

The fourth proportional to 9,866.78, 14,795.28 and 3,626.54 is: 5,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,866.78 : 14,795.28 = 3,626.54 : x
  2. Step 2: Convert to fraction form
    9,866.78/14,795.28 = 3,626.54/x
  3. Step 3: Cross multiply
    9,866.78x = 14,795.28 × 3,626.54
  4. Step 4: Simplify right side
    9,866.78x = 53,655,674.73
  5. Step 5: Solve for x
    x = 53,655,674.73/9,866.78
  6. Step 6: Final answer
    x = 5,438.01

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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.