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Finding the Fourth Proportional to 18,905.95, 26,091.08 and 10,522.99

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Solution

The fourth proportional to 18,905.95, 26,091.08 and 10,522.99 is: 14,522.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.95 : 26,091.08 = 10,522.99 : x
  2. Step 2: Convert to fraction form
    18,905.95/26,091.08 = 10,522.99/x
  3. Step 3: Cross multiply
    18,905.95x = 26,091.08 × 10,522.99
  4. Step 4: Simplify right side
    18,905.95x = 274,556,173.93
  5. Step 5: Solve for x
    x = 274,556,173.93/18,905.95
  6. Step 6: Final answer
    x = 14,522.21

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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.