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Finding the Fourth Proportional to 69,889.68, 96,449.76 and 38,059.20

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Solution

The fourth proportional to 69,889.68, 96,449.76 and 38,059.20 is: 52,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,889.68 : 96,449.76 = 38,059.20 : x
  2. Step 2: Convert to fraction form
    69,889.68/96,449.76 = 38,059.20/x
  3. Step 3: Cross multiply
    69,889.68x = 96,449.76 × 38,059.20
  4. Step 4: Simplify right side
    69,889.68x = 3,670,800,705.79
  5. Step 5: Solve for x
    x = 3,670,800,705.79/69,889.68
  6. Step 6: Final answer
    x = 52,522.79

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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.