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Finding the Fourth Proportional to 18,419.63, 25,419.21 and 10,036.13

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Solution

The fourth proportional to 18,419.63, 25,419.21 and 10,036.13 is: 13,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.63 : 25,419.21 = 10,036.13 : x
  2. Step 2: Convert to fraction form
    18,419.63/25,419.21 = 10,036.13/x
  3. Step 3: Cross multiply
    18,419.63x = 25,419.21 × 10,036.13
  4. Step 4: Simplify right side
    18,419.63x = 255,110,496.06
  5. Step 5: Solve for x
    x = 255,110,496.06/18,419.63
  6. Step 6: Final answer
    x = 13,849.93

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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.