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Finding the Fourth Proportional to 316,634.94, 436,966.11 and 173,408.58

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Solution

The fourth proportional to 316,634.94, 436,966.11 and 173,408.58 is: 239,309.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,634.94 : 436,966.11 = 173,408.58 : x
  2. Step 2: Convert to fraction form
    316,634.94/436,966.11 = 173,408.58/x
  3. Step 3: Cross multiply
    316,634.94x = 436,966.11 × 173,408.58
  4. Step 4: Simplify right side
    316,634.94x = 75,773,672,643.22
  5. Step 5: Solve for x
    x = 75,773,672,643.22/316,634.94
  6. Step 6: Final answer
    x = 239,309.26

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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.