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Finding the Fourth Proportional to 455,197.77, 628,079.15 and 261,568.07

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Solution

The fourth proportional to 455,197.77, 628,079.15 and 261,568.07 is: 360,910.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,197.77 : 628,079.15 = 261,568.07 : x
  2. Step 2: Convert to fraction form
    455,197.77/628,079.15 = 261,568.07/x
  3. Step 3: Cross multiply
    455,197.77x = 628,079.15 × 261,568.07
  4. Step 4: Simplify right side
    455,197.77x = 164,285,446,624.50
  5. Step 5: Solve for x
    x = 164,285,446,624.50/455,197.77
  6. Step 6: Final answer
    x = 360,910.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.