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Finding the Fourth Proportional to 2,981.32, 4,471.47 and 790.27

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Solution

The fourth proportional to 2,981.32, 4,471.47 and 790.27 is: 1,185.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.32 : 4,471.47 = 790.27 : x
  2. Step 2: Convert to fraction form
    2,981.32/4,471.47 = 790.27/x
  3. Step 3: Cross multiply
    2,981.32x = 4,471.47 × 790.27
  4. Step 4: Simplify right side
    2,981.32x = 3,533,668.60
  5. Step 5: Solve for x
    x = 3,533,668.60/2,981.32
  6. Step 6: Final answer
    x = 1,185.27

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