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Finding the Fourth Proportional to 18,809.55, 25,955.55 and 10,743.17

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Solution

The fourth proportional to 18,809.55, 25,955.55 and 10,743.17 is: 14,824.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.55 : 25,955.55 = 10,743.17 : x
  2. Step 2: Convert to fraction form
    18,809.55/25,955.55 = 10,743.17/x
  3. Step 3: Cross multiply
    18,809.55x = 25,955.55 × 10,743.17
  4. Step 4: Simplify right side
    18,809.55x = 278,844,756.32
  5. Step 5: Solve for x
    x = 278,844,756.32/18,809.55
  6. Step 6: Final answer
    x = 14,824.64

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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.