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Finding the Fourth Proportional to 220,271.60, 330,245.77 and 70,425.65

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Solution

The fourth proportional to 220,271.60, 330,245.77 and 70,425.65 is: 105,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,271.60 : 330,245.77 = 70,425.65 : x
  2. Step 2: Convert to fraction form
    220,271.60/330,245.77 = 70,425.65/x
  3. Step 3: Cross multiply
    220,271.60x = 330,245.77 × 70,425.65
  4. Step 4: Simplify right side
    220,271.60x = 23,257,773,012.00
  5. Step 5: Solve for x
    x = 23,257,773,012.00/220,271.60
  6. Step 6: Final answer
    x = 105,586.80

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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.