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Finding the Fourth Proportional to 60,139.50, 82,993.88 and 38,955.64

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Solution

The fourth proportional to 60,139.50, 82,993.88 and 38,955.64 is: 53,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,139.50 : 82,993.88 = 38,955.64 : x
  2. Step 2: Convert to fraction form
    60,139.50/82,993.88 = 38,955.64/x
  3. Step 3: Cross multiply
    60,139.50x = 82,993.88 × 38,955.64
  4. Step 4: Simplify right side
    60,139.50x = 3,233,079,711.48
  5. Step 5: Solve for x
    x = 3,233,079,711.48/60,139.50
  6. Step 6: Final answer
    x = 53,759.67

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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.