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Finding the Fourth Proportional to 39,032.40, 58,481.40 and 18,213.20

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Solution

The fourth proportional to 39,032.40, 58,481.40 and 18,213.20 is: 27,288.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,032.40 : 58,481.40 = 18,213.20 : x
  2. Step 2: Convert to fraction form
    39,032.40/58,481.40 = 18,213.20/x
  3. Step 3: Cross multiply
    39,032.40x = 58,481.40 × 18,213.20
  4. Step 4: Simplify right side
    39,032.40x = 1,065,133,434.48
  5. Step 5: Solve for x
    x = 1,065,133,434.48/39,032.40
  6. Step 6: Final answer
    x = 27,288.44

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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.