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Finding the Fourth Proportional to 18,993.49, 26,206.64 and 11,030.99

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Solution

The fourth proportional to 18,993.49, 26,206.64 and 11,030.99 is: 15,220.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.49 : 26,206.64 = 11,030.99 : x
  2. Step 2: Convert to fraction form
    18,993.49/26,206.64 = 11,030.99/x
  3. Step 3: Cross multiply
    18,993.49x = 26,206.64 × 11,030.99
  4. Step 4: Simplify right side
    18,993.49x = 289,085,038.95
  5. Step 5: Solve for x
    x = 289,085,038.95/18,993.49
  6. Step 6: Final answer
    x = 15,220.22

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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.