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Finding the Fourth Proportional to 264,215.80, 396,323.70 and 260,716.60

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Solution

The fourth proportional to 264,215.80, 396,323.70 and 260,716.60 is: 391,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,215.80 : 396,323.70 = 260,716.60 : x
  2. Step 2: Convert to fraction form
    264,215.80/396,323.70 = 260,716.60/x
  3. Step 3: Cross multiply
    264,215.80x = 396,323.70 × 260,716.60
  4. Step 4: Simplify right side
    264,215.80x = 103,328,167,563.42
  5. Step 5: Solve for x
    x = 103,328,167,563.42/264,215.80
  6. Step 6: Final answer
    x = 391,074.90

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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.