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Finding the Fourth Proportional to 14,662.76, 21,991.55 and 6,340.55

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Solution

The fourth proportional to 14,662.76, 21,991.55 and 6,340.55 is: 9,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.76 : 21,991.55 = 6,340.55 : x
  2. Step 2: Convert to fraction form
    14,662.76/21,991.55 = 6,340.55/x
  3. Step 3: Cross multiply
    14,662.76x = 21,991.55 × 6,340.55
  4. Step 4: Simplify right side
    14,662.76x = 139,438,380.69
  5. Step 5: Solve for x
    x = 139,438,380.69/14,662.76
  6. Step 6: Final answer
    x = 9,509.70

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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.