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Finding the Fourth Proportional to 69,905.48, 96,469.71 and 38,074.28

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Solution

The fourth proportional to 69,905.48, 96,469.71 and 38,074.28 is: 52,542.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,905.48 : 96,469.71 = 38,074.28 : x
  2. Step 2: Convert to fraction form
    69,905.48/96,469.71 = 38,074.28/x
  3. Step 3: Cross multiply
    69,905.48x = 96,469.71 × 38,074.28
  4. Step 4: Simplify right side
    69,905.48x = 3,673,014,750.06
  5. Step 5: Solve for x
    x = 3,673,014,750.06/69,905.48
  6. Step 6: Final answer
    x = 52,542.59

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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.