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Finding the Fourth Proportional to 69,915.70, 96,485.58 and 38,086.66

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Solution

The fourth proportional to 69,915.70, 96,485.58 and 38,086.66 is: 52,560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,915.70 : 96,485.58 = 38,086.66 : x
  2. Step 2: Convert to fraction form
    69,915.70/96,485.58 = 38,086.66/x
  3. Step 3: Cross multiply
    69,915.70x = 96,485.58 × 38,086.66
  4. Step 4: Simplify right side
    69,915.70x = 3,674,813,480.36
  5. Step 5: Solve for x
    x = 3,674,813,480.36/69,915.70
  6. Step 6: Final answer
    x = 52,560.63

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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.