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Finding the Fourth Proportional to 26,632.40, 39,945.05 and 7,912.08

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Solution

The fourth proportional to 26,632.40, 39,945.05 and 7,912.08 is: 11,867.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,632.40 : 39,945.05 = 7,912.08 : x
  2. Step 2: Convert to fraction form
    26,632.40/39,945.05 = 7,912.08/x
  3. Step 3: Cross multiply
    26,632.40x = 39,945.05 × 7,912.08
  4. Step 4: Simplify right side
    26,632.40x = 316,048,421.31
  5. Step 5: Solve for x
    x = 316,048,421.31/26,632.40
  6. Step 6: Final answer
    x = 11,867.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.