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Finding the Fourth Proportional to 201,969.99, 278,706 and 111,326.67

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Solution

The fourth proportional to 201,969.99, 278,706 and 111,326.67 is: 153,623.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,969.99 : 278,706 = 111,326.67 : x
  2. Step 2: Convert to fraction form
    201,969.99/278,706 = 111,326.67/x
  3. Step 3: Cross multiply
    201,969.99x = 278,706 × 111,326.67
  4. Step 4: Simplify right side
    201,969.99x = 31,027,410,889.02
  5. Step 5: Solve for x
    x = 31,027,410,889.02/201,969.99
  6. Step 6: Final answer
    x = 153,623.87

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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.