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Finding the Fourth Proportional to 5,732.81, 7,893.63 and 5,020.55

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Solution

The fourth proportional to 5,732.81, 7,893.63 and 5,020.55 is: 6,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,732.81 : 7,893.63 = 5,020.55 : x
  2. Step 2: Convert to fraction form
    5,732.81/7,893.63 = 5,020.55/x
  3. Step 3: Cross multiply
    5,732.81x = 7,893.63 × 5,020.55
  4. Step 4: Simplify right side
    5,732.81x = 39,630,364.10
  5. Step 5: Solve for x
    x = 39,630,364.10/5,732.81
  6. Step 6: Final answer
    x = 6,912.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.