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Finding the Fourth Proportional to 325,813.40, 488,720.10 and 303,670.03

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Solution

The fourth proportional to 325,813.40, 488,720.10 and 303,670.03 is: 455,505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,813.40 : 488,720.10 = 303,670.03 : x
  2. Step 2: Convert to fraction form
    325,813.40/488,720.10 = 303,670.03/x
  3. Step 3: Cross multiply
    325,813.40x = 488,720.10 × 303,670.03
  4. Step 4: Simplify right side
    325,813.40x = 148,409,647,428.60
  5. Step 5: Solve for x
    x = 148,409,647,428.60/325,813.40
  6. Step 6: Final answer
    x = 455,505.05

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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.