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Finding the Fourth Proportional to 18,792.55, 28,187.83 and 6,312.82

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Solution

The fourth proportional to 18,792.55, 28,187.83 and 6,312.82 is: 9,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.55 : 28,187.83 = 6,312.82 : x
  2. Step 2: Convert to fraction form
    18,792.55/28,187.83 = 6,312.82/x
  3. Step 3: Cross multiply
    18,792.55x = 28,187.83 × 6,312.82
  4. Step 4: Simplify right side
    18,792.55x = 177,944,665.42
  5. Step 5: Solve for x
    x = 177,944,665.42/18,792.55
  6. Step 6: Final answer
    x = 9,468.90

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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.