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Finding the Fourth Proportional to 541,128.40, 811,692.60 and 423,163.60

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Solution

The fourth proportional to 541,128.40, 811,692.60 and 423,163.60 is: 634,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,128.40 : 811,692.60 = 423,163.60 : x
  2. Step 2: Convert to fraction form
    541,128.40/811,692.60 = 423,163.60/x
  3. Step 3: Cross multiply
    541,128.40x = 811,692.60 × 423,163.60
  4. Step 4: Simplify right side
    541,128.40x = 343,478,762,709.36
  5. Step 5: Solve for x
    x = 343,478,762,709.36/541,128.40
  6. Step 6: Final answer
    x = 634,745.40

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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.