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Finding the Fourth Proportional to 14,609.88, 21,912.75 and 4,749.30

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Solution

The fourth proportional to 14,609.88, 21,912.75 and 4,749.30 is: 7,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.88 : 21,912.75 = 4,749.30 : x
  2. Step 2: Convert to fraction form
    14,609.88/21,912.75 = 4,749.30/x
  3. Step 3: Cross multiply
    14,609.88x = 21,912.75 × 4,749.30
  4. Step 4: Simplify right side
    14,609.88x = 104,070,223.58
  5. Step 5: Solve for x
    x = 104,070,223.58/14,609.88
  6. Step 6: Final answer
    x = 7,123.28

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1.5x scale

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.