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Finding the Fourth Proportional to 14,609.73, 21,915.81 and 4,748.79

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Solution

The fourth proportional to 14,609.73, 21,915.81 and 4,748.79 is: 7,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.73 : 21,915.81 = 4,748.79 : x
  2. Step 2: Convert to fraction form
    14,609.73/21,915.81 = 4,748.79/x
  3. Step 3: Cross multiply
    14,609.73x = 21,915.81 × 4,748.79
  4. Step 4: Simplify right side
    14,609.73x = 104,073,579.37
  5. Step 5: Solve for x
    x = 104,073,579.37/14,609.73
  6. Step 6: Final answer
    x = 7,123.58

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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.