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Finding the Fourth Proportional to 14,122.86, 19,488.88 and 7,749.30

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Solution

The fourth proportional to 14,122.86, 19,488.88 and 7,749.30 is: 10,693.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.86 : 19,488.88 = 7,749.30 : x
  2. Step 2: Convert to fraction form
    14,122.86/19,488.88 = 7,749.30/x
  3. Step 3: Cross multiply
    14,122.86x = 19,488.88 × 7,749.30
  4. Step 4: Simplify right side
    14,122.86x = 151,025,177.78
  5. Step 5: Solve for x
    x = 151,025,177.78/14,122.86
  6. Step 6: Final answer
    x = 10,693.67

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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.