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Finding the Fourth Proportional to 60,138.51, 82,992.50 and 38,954.64

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Solution

The fourth proportional to 60,138.51, 82,992.50 and 38,954.64 is: 53,758.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,138.51 : 82,992.50 = 38,954.64 : x
  2. Step 2: Convert to fraction form
    60,138.51/82,992.50 = 38,954.64/x
  3. Step 3: Cross multiply
    60,138.51x = 82,992.50 × 38,954.64
  4. Step 4: Simplify right side
    60,138.51x = 3,232,942,765.43
  5. Step 5: Solve for x
    x = 3,232,942,765.43/60,138.51
  6. Step 6: Final answer
    x = 53,758.28

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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.