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Finding the Fourth Proportional to 18,993.94, 26,210.87 and 11,035.53

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Solution

The fourth proportional to 18,993.94, 26,210.87 and 11,035.53 is: 15,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.94 : 26,210.87 = 11,035.53 : x
  2. Step 2: Convert to fraction form
    18,993.94/26,210.87 = 11,035.53/x
  3. Step 3: Cross multiply
    18,993.94x = 26,210.87 × 11,035.53
  4. Step 4: Simplify right side
    18,993.94x = 289,250,787.03
  5. Step 5: Solve for x
    x = 289,250,787.03/18,993.94
  6. Step 6: Final answer
    x = 15,228.58

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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.