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Finding the Fourth Proportional to 419,653.74, 579,104.05 and 238,365.11

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Solution

The fourth proportional to 419,653.74, 579,104.05 and 238,365.11 is: 328,933.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,653.74 : 579,104.05 = 238,365.11 : x
  2. Step 2: Convert to fraction form
    419,653.74/579,104.05 = 238,365.11/x
  3. Step 3: Cross multiply
    419,653.74x = 579,104.05 × 238,365.11
  4. Step 4: Simplify right side
    419,653.74x = 138,038,197,684.18
  5. Step 5: Solve for x
    x = 138,038,197,684.18/419,653.74
  6. Step 6: Final answer
    x = 328,933.56

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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.