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Finding the Fourth Proportional to 426,396.78, 588,428.43 and 235,410.54

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Solution

The fourth proportional to 426,396.78, 588,428.43 and 235,410.54 is: 324,867.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,396.78 : 588,428.43 = 235,410.54 : x
  2. Step 2: Convert to fraction form
    426,396.78/588,428.43 = 235,410.54/x
  3. Step 3: Cross multiply
    426,396.78x = 588,428.43 × 235,410.54
  4. Step 4: Simplify right side
    426,396.78x = 138,522,254,457.65
  5. Step 5: Solve for x
    x = 138,522,254,457.65/426,396.78
  6. Step 6: Final answer
    x = 324,867.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.