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Finding the Fourth Proportional to 46,648.60, 69,972.90 and 27,986.20

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Solution

The fourth proportional to 46,648.60, 69,972.90 and 27,986.20 is: 41,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,648.60 : 69,972.90 = 27,986.20 : x
  2. Step 2: Convert to fraction form
    46,648.60/69,972.90 = 27,986.20/x
  3. Step 3: Cross multiply
    46,648.60x = 69,972.90 × 27,986.20
  4. Step 4: Simplify right side
    46,648.60x = 1,958,275,573.98
  5. Step 5: Solve for x
    x = 1,958,275,573.98/46,648.60
  6. Step 6: Final answer
    x = 41,979.30

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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.