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Finding the Fourth Proportional to 7,089.27, 9,773.05 and 4,986.87

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Solution

The fourth proportional to 7,089.27, 9,773.05 and 4,986.87 is: 6,874.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,089.27 : 9,773.05 = 4,986.87 : x
  2. Step 2: Convert to fraction form
    7,089.27/9,773.05 = 4,986.87/x
  3. Step 3: Cross multiply
    7,089.27x = 9,773.05 × 4,986.87
  4. Step 4: Simplify right side
    7,089.27x = 48,736,929.85
  5. Step 5: Solve for x
    x = 48,736,929.85/7,089.27
  6. Step 6: Final answer
    x = 6,874.75

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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.