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Finding the Fourth Proportional to 651,408.40, 977,112.60 and 277,469.20

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Solution

The fourth proportional to 651,408.40, 977,112.60 and 277,469.20 is: 416,203.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,408.40 : 977,112.60 = 277,469.20 : x
  2. Step 2: Convert to fraction form
    651,408.40/977,112.60 = 277,469.20/x
  3. Step 3: Cross multiply
    651,408.40x = 977,112.60 × 277,469.20
  4. Step 4: Simplify right side
    651,408.40x = 271,118,651,431.92
  5. Step 5: Solve for x
    x = 271,118,651,431.92/651,408.40
  6. Step 6: Final answer
    x = 416,203.80

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Double scale
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Similar ratio
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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.