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Finding the Fourth Proportional to 451,686.21, 677,415.88 and 185,520.21

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Solution

The fourth proportional to 451,686.21, 677,415.88 and 185,520.21 is: 278,233.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,686.21 : 677,415.88 = 185,520.21 : x
  2. Step 2: Convert to fraction form
    451,686.21/677,415.88 = 185,520.21/x
  3. Step 3: Cross multiply
    451,686.21x = 677,415.88 × 185,520.21
  4. Step 4: Simplify right side
    451,686.21x = 125,674,336,314.94
  5. Step 5: Solve for x
    x = 125,674,336,314.94/451,686.21
  6. Step 6: Final answer
    x = 278,233.72

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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.