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Finding the Fourth Proportional to 46,608.60, 69,912.90 and 15,439.80

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Solution

The fourth proportional to 46,608.60, 69,912.90 and 15,439.80 is: 23,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,608.60 : 69,912.90 = 15,439.80 : x
  2. Step 2: Convert to fraction form
    46,608.60/69,912.90 = 15,439.80/x
  3. Step 3: Cross multiply
    46,608.60x = 69,912.90 × 15,439.80
  4. Step 4: Simplify right side
    46,608.60x = 1,079,441,193.42
  5. Step 5: Solve for x
    x = 1,079,441,193.42/46,608.60
  6. Step 6: Final answer
    x = 23,159.70

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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.