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Finding the Fourth Proportional to 69,261.90, 103,633.65 and 45,933.90

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Solution

The fourth proportional to 69,261.90, 103,633.65 and 45,933.90 is: 68,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,261.90 : 103,633.65 = 45,933.90 : x
  2. Step 2: Convert to fraction form
    69,261.90/103,633.65 = 45,933.90/x
  3. Step 3: Cross multiply
    69,261.90x = 103,633.65 × 45,933.90
  4. Step 4: Simplify right side
    69,261.90x = 4,760,297,715.74
  5. Step 5: Solve for x
    x = 4,760,297,715.74/69,261.90
  6. Step 6: Final answer
    x = 68,728.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.