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Finding the Fourth Proportional to 18,338.96, 25,307.89 and 9,955.46

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Solution

The fourth proportional to 18,338.96, 25,307.89 and 9,955.46 is: 13,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.96 : 25,307.89 = 9,955.46 : x
  2. Step 2: Convert to fraction form
    18,338.96/25,307.89 = 9,955.46/x
  3. Step 3: Cross multiply
    18,338.96x = 25,307.89 × 9,955.46
  4. Step 4: Simplify right side
    18,338.96x = 251,951,535.15
  5. Step 5: Solve for x
    x = 251,951,535.15/18,338.96
  6. Step 6: Final answer
    x = 13,738.60

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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.