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Finding the Fourth Proportional to 220,170,679.80, 330,256,019.70 and 147,611,268.60

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Solution

The fourth proportional to 220,170,679.80, 330,256,019.70 and 147,611,268.60 is: 221,416,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,170,679.80 : 330,256,019.70 = 147,611,268.60 : x
  2. Step 2: Convert to fraction form
    220,170,679.80/330,256,019.70 = 147,611,268.60/x
  3. Step 3: Cross multiply
    220,170,679.80x = 330,256,019.70 × 147,611,268.60
  4. Step 4: Simplify right side
    220,170,679.80x = 48,749,510,030,703,584
  5. Step 5: Solve for x
    x = 48,749,510,030,703,584/220,170,679.80
  6. Step 6: Final answer
    x = 221,416,902.90

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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.