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Finding the Fourth Proportional to 18,937.68, 26,106.64 and 13,254.84

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Solution

The fourth proportional to 18,937.68, 26,106.64 and 13,254.84 is: 18,272.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.68 : 26,106.64 = 13,254.84 : x
  2. Step 2: Convert to fraction form
    18,937.68/26,106.64 = 13,254.84/x
  3. Step 3: Cross multiply
    18,937.68x = 26,106.64 × 13,254.84
  4. Step 4: Simplify right side
    18,937.68x = 346,039,336.14
  5. Step 5: Solve for x
    x = 346,039,336.14/18,937.68
  6. Step 6: Final answer
    x = 18,272.53

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