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Finding the Fourth Proportional to 8,811.48, 12,160.02 and 5,409.48

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Solution

The fourth proportional to 8,811.48, 12,160.02 and 5,409.48 is: 7,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.48 : 12,160.02 = 5,409.48 : x
  2. Step 2: Convert to fraction form
    8,811.48/12,160.02 = 5,409.48/x
  3. Step 3: Cross multiply
    8,811.48x = 12,160.02 × 5,409.48
  4. Step 4: Simplify right side
    8,811.48x = 65,779,450.88
  5. Step 5: Solve for x
    x = 65,779,450.88/8,811.48
  6. Step 6: Final answer
    x = 7,465.20

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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.