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Finding the Fourth Proportional to 18,842.98, 25,994.98 and 11,670.99

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Solution

The fourth proportional to 18,842.98, 25,994.98 and 11,670.99 is: 16,100.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.98 : 25,994.98 = 11,670.99 : x
  2. Step 2: Convert to fraction form
    18,842.98/25,994.98 = 11,670.99/x
  3. Step 3: Cross multiply
    18,842.98x = 25,994.98 × 11,670.99
  4. Step 4: Simplify right side
    18,842.98x = 303,387,151.63
  5. Step 5: Solve for x
    x = 303,387,151.63/18,842.98
  6. Step 6: Final answer
    x = 16,100.81

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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.