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Finding the Fourth Proportional to 19,373.49, 26,728.54 and 12,662.99

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Solution

The fourth proportional to 19,373.49, 26,728.54 and 12,662.99 is: 17,470.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,373.49 : 26,728.54 = 12,662.99 : x
  2. Step 2: Convert to fraction form
    19,373.49/26,728.54 = 12,662.99/x
  3. Step 3: Cross multiply
    19,373.49x = 26,728.54 × 12,662.99
  4. Step 4: Simplify right side
    19,373.49x = 338,463,037.78
  5. Step 5: Solve for x
    x = 338,463,037.78/19,373.49
  6. Step 6: Final answer
    x = 17,470.43

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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.