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Finding the Fourth Proportional to 13,892.54, 19,166.54 and 8,855.60

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Solution

The fourth proportional to 13,892.54, 19,166.54 and 8,855.60 is: 12,217.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.54 : 19,166.54 = 8,855.60 : x
  2. Step 2: Convert to fraction form
    13,892.54/19,166.54 = 8,855.60/x
  3. Step 3: Cross multiply
    13,892.54x = 19,166.54 × 8,855.60
  4. Step 4: Simplify right side
    13,892.54x = 169,731,071.51
  5. Step 5: Solve for x
    x = 169,731,071.51/13,892.54
  6. Step 6: Final answer
    x = 12,217.43

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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.