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Finding the Fourth Proportional to 2,071.96, 2,859.42 and 1,372.84

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Solution

The fourth proportional to 2,071.96, 2,859.42 and 1,372.84 is: 1,894.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.96 : 2,859.42 = 1,372.84 : x
  2. Step 2: Convert to fraction form
    2,071.96/2,859.42 = 1,372.84/x
  3. Step 3: Cross multiply
    2,071.96x = 2,859.42 × 1,372.84
  4. Step 4: Simplify right side
    2,071.96x = 3,925,526.15
  5. Step 5: Solve for x
    x = 3,925,526.15/2,071.96
  6. Step 6: Final answer
    x = 1,894.60

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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.