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Finding the Fourth Proportional to 13,224.58, 18,248.43 and 7,847.98

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Solution

The fourth proportional to 13,224.58, 18,248.43 and 7,847.98 is: 10,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.58 : 18,248.43 = 7,847.98 : x
  2. Step 2: Convert to fraction form
    13,224.58/18,248.43 = 7,847.98/x
  3. Step 3: Cross multiply
    13,224.58x = 18,248.43 × 7,847.98
  4. Step 4: Simplify right side
    13,224.58x = 143,213,313.67
  5. Step 5: Solve for x
    x = 143,213,313.67/13,224.58
  6. Step 6: Final answer
    x = 10,829.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.