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Finding the Fourth Proportional to 423,090.90, 635,673.15 and 318,114.90

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Solution

The fourth proportional to 423,090.90, 635,673.15 and 318,114.90 is: 477,951.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,090.90 : 635,673.15 = 318,114.90 : x
  2. Step 2: Convert to fraction form
    423,090.90/635,673.15 = 318,114.90/x
  3. Step 3: Cross multiply
    423,090.90x = 635,673.15 × 318,114.90
  4. Step 4: Simplify right side
    423,090.90x = 202,217,100,544.94
  5. Step 5: Solve for x
    x = 202,217,100,544.94/423,090.90
  6. Step 6: Final answer
    x = 477,951.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.