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Finding the Fourth Proportional to 18,624.47, 25,701.53 and 13,865.67

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Solution

The fourth proportional to 18,624.47, 25,701.53 and 13,865.67 is: 19,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,624.47 : 25,701.53 = 13,865.67 : x
  2. Step 2: Convert to fraction form
    18,624.47/25,701.53 = 13,865.67/x
  3. Step 3: Cross multiply
    18,624.47x = 25,701.53 × 13,865.67
  4. Step 4: Simplify right side
    18,624.47x = 356,368,864.15
  5. Step 5: Solve for x
    x = 356,368,864.15/18,624.47
  6. Step 6: Final answer
    x = 19,134.45

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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.