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Finding the Fourth Proportional to 11,408.15, 15,751.01 and 7,384.70

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Solution

The fourth proportional to 11,408.15, 15,751.01 and 7,384.70 is: 10,195.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.15 : 15,751.01 = 7,384.70 : x
  2. Step 2: Convert to fraction form
    11,408.15/15,751.01 = 7,384.70/x
  3. Step 3: Cross multiply
    11,408.15x = 15,751.01 × 7,384.70
  4. Step 4: Simplify right side
    11,408.15x = 116,316,483.55
  5. Step 5: Solve for x
    x = 116,316,483.55/11,408.15
  6. Step 6: Final answer
    x = 10,195.91

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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.