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Finding the Fourth Proportional to 2,191.75, 3,024.62 and 1,406.86

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Solution

The fourth proportional to 2,191.75, 3,024.62 and 1,406.86 is: 1,941.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.75 : 3,024.62 = 1,406.86 : x
  2. Step 2: Convert to fraction form
    2,191.75/3,024.62 = 1,406.86/x
  3. Step 3: Cross multiply
    2,191.75x = 3,024.62 × 1,406.86
  4. Step 4: Simplify right side
    2,191.75x = 4,255,216.89
  5. Step 5: Solve for x
    x = 4,255,216.89/2,191.75
  6. Step 6: Final answer
    x = 1,941.47

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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.