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Finding the Fourth Proportional to 7,355.10, 11,023.05 and 3,405.90

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Solution

The fourth proportional to 7,355.10, 11,023.05 and 3,405.90 is: 5,104.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,355.10 : 11,023.05 = 3,405.90 : x
  2. Step 2: Convert to fraction form
    7,355.10/11,023.05 = 3,405.90/x
  3. Step 3: Cross multiply
    7,355.10x = 11,023.05 × 3,405.90
  4. Step 4: Simplify right side
    7,355.10x = 37,543,406.00
  5. Step 5: Solve for x
    x = 37,543,406.00/7,355.10
  6. Step 6: Final answer
    x = 5,104.40

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Why These Related Problems?

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