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Finding the Fourth Proportional to 69,028.48, 95,258.82 and 39,220.48

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Solution

The fourth proportional to 69,028.48, 95,258.82 and 39,220.48 is: 54,123.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,028.48 : 95,258.82 = 39,220.48 : x
  2. Step 2: Convert to fraction form
    69,028.48/95,258.82 = 39,220.48/x
  3. Step 3: Cross multiply
    69,028.48x = 95,258.82 × 39,220.48
  4. Step 4: Simplify right side
    69,028.48x = 3,736,096,406.49
  5. Step 5: Solve for x
    x = 3,736,096,406.49/69,028.48
  6. Step 6: Final answer
    x = 54,123.99

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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.