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Finding the Fourth Proportional to 217,074.60, 325,611.90 and 146,215.80

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Solution

The fourth proportional to 217,074.60, 325,611.90 and 146,215.80 is: 219,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,074.60 : 325,611.90 = 146,215.80 : x
  2. Step 2: Convert to fraction form
    217,074.60/325,611.90 = 146,215.80/x
  3. Step 3: Cross multiply
    217,074.60x = 325,611.90 × 146,215.80
  4. Step 4: Simplify right side
    217,074.60x = 47,609,604,448.02
  5. Step 5: Solve for x
    x = 47,609,604,448.02/217,074.60
  6. Step 6: Final answer
    x = 219,323.70

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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.