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Finding the Fourth Proportional to 14,321.62, 21,478.26 and 4,961.26

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Solution

The fourth proportional to 14,321.62, 21,478.26 and 4,961.26 is: 7,440.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,321.62 : 21,478.26 = 4,961.26 : x
  2. Step 2: Convert to fraction form
    14,321.62/21,478.26 = 4,961.26/x
  3. Step 3: Cross multiply
    14,321.62x = 21,478.26 × 4,961.26
  4. Step 4: Simplify right side
    14,321.62x = 106,559,232.21
  5. Step 5: Solve for x
    x = 106,559,232.21/14,321.62
  6. Step 6: Final answer
    x = 7,440.45

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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.