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Finding the Fourth Proportional to 411,408.60, 617,158.28 and 130,860.24

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Solution

The fourth proportional to 411,408.60, 617,158.28 and 130,860.24 is: 196,304.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,408.60 : 617,158.28 = 130,860.24 : x
  2. Step 2: Convert to fraction form
    411,408.60/617,158.28 = 130,860.24/x
  3. Step 3: Cross multiply
    411,408.60x = 617,158.28 × 130,860.24
  4. Step 4: Simplify right side
    411,408.60x = 80,761,480,638.79
  5. Step 5: Solve for x
    x = 80,761,480,638.79/411,408.60
  6. Step 6: Final answer
    x = 196,304.79

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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.