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Finding the Fourth Proportional to 20,582.70, 30,874.05 and 5,792.10

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Solution

The fourth proportional to 20,582.70, 30,874.05 and 5,792.10 is: 8,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.70 : 30,874.05 = 5,792.10 : x
  2. Step 2: Convert to fraction form
    20,582.70/30,874.05 = 5,792.10/x
  3. Step 3: Cross multiply
    20,582.70x = 30,874.05 × 5,792.10
  4. Step 4: Simplify right side
    20,582.70x = 178,825,585.01
  5. Step 5: Solve for x
    x = 178,825,585.01/20,582.70
  6. Step 6: Final answer
    x = 8,688.15

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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.