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Finding the Fourth Proportional to 5,276.24, 7,916.16 and 1,990.27

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Solution

The fourth proportional to 5,276.24, 7,916.16 and 1,990.27 is: 2,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.24 : 7,916.16 = 1,990.27 : x
  2. Step 2: Convert to fraction form
    5,276.24/7,916.16 = 1,990.27/x
  3. Step 3: Cross multiply
    5,276.24x = 7,916.16 × 1,990.27
  4. Step 4: Simplify right side
    5,276.24x = 15,755,246.23
  5. Step 5: Solve for x
    x = 15,755,246.23/5,276.24
  6. Step 6: Final answer
    x = 2,986.08

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1.5x scale

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.