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Finding the Fourth Proportional to 478,235.26, 717,396.90 and 123,250.60

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Solution

The fourth proportional to 478,235.26, 717,396.90 and 123,250.60 is: 184,887.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,235.26 : 717,396.90 = 123,250.60 : x
  2. Step 2: Convert to fraction form
    478,235.26/717,396.90 = 123,250.60/x
  3. Step 3: Cross multiply
    478,235.26x = 717,396.90 × 123,250.60
  4. Step 4: Simplify right side
    478,235.26x = 88,419,598,363.14
  5. Step 5: Solve for x
    x = 88,419,598,363.14/478,235.26
  6. Step 6: Final answer
    x = 184,887.24

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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.