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Finding the Fourth Proportional to 18,451.38, 27,681.74 and 5,303.76

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Solution

The fourth proportional to 18,451.38, 27,681.74 and 5,303.76 is: 7,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451.38 : 27,681.74 = 5,303.76 : x
  2. Step 2: Convert to fraction form
    18,451.38/27,681.74 = 5,303.76/x
  3. Step 3: Cross multiply
    18,451.38x = 27,681.74 × 5,303.76
  4. Step 4: Simplify right side
    18,451.38x = 146,817,278.82
  5. Step 5: Solve for x
    x = 146,817,278.82/18,451.38
  6. Step 6: Final answer
    x = 7,956.98

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.