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Finding the Fourth Proportional to 14,335.79, 21,504.36 and 7,669.54

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Solution

The fourth proportional to 14,335.79, 21,504.36 and 7,669.54 is: 11,504.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,335.79 : 21,504.36 = 7,669.54 : x
  2. Step 2: Convert to fraction form
    14,335.79/21,504.36 = 7,669.54/x
  3. Step 3: Cross multiply
    14,335.79x = 21,504.36 × 7,669.54
  4. Step 4: Simplify right side
    14,335.79x = 164,928,462.30
  5. Step 5: Solve for x
    x = 164,928,462.30/14,335.79
  6. Step 6: Final answer
    x = 11,504.67

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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.