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Finding the Fourth Proportional to 316,290.44, 436,476.92 and 173,048.42

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Solution

The fourth proportional to 316,290.44, 436,476.92 and 173,048.42 is: 238,804.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,290.44 : 436,476.92 = 173,048.42 : x
  2. Step 2: Convert to fraction form
    316,290.44/436,476.92 = 173,048.42/x
  3. Step 3: Cross multiply
    316,290.44x = 436,476.92 × 173,048.42
  4. Step 4: Simplify right side
    316,290.44x = 75,531,641,372.47
  5. Step 5: Solve for x
    x = 75,531,641,372.47/316,290.44
  6. Step 6: Final answer
    x = 238,804.69

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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.