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Finding the Fourth Proportional to 18,768.99, 25,893.66 and 10,806.93

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Solution

The fourth proportional to 18,768.99, 25,893.66 and 10,806.93 is: 14,909.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.99 : 25,893.66 = 10,806.93 : x
  2. Step 2: Convert to fraction form
    18,768.99/25,893.66 = 10,806.93/x
  3. Step 3: Cross multiply
    18,768.99x = 25,893.66 × 10,806.93
  4. Step 4: Simplify right side
    18,768.99x = 279,830,971.06
  5. Step 5: Solve for x
    x = 279,830,971.06/18,768.99
  6. Step 6: Final answer
    x = 14,909.22

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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.