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Finding the Fourth Proportional to 316,559.84, 436,852.64 and 173,329.12

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Solution

The fourth proportional to 316,559.84, 436,852.64 and 173,329.12 is: 239,194.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,559.84 : 436,852.64 = 173,329.12 : x
  2. Step 2: Convert to fraction form
    316,559.84/436,852.64 = 173,329.12/x
  3. Step 3: Cross multiply
    316,559.84x = 436,852.64 × 173,329.12
  4. Step 4: Simplify right side
    316,559.84x = 75,719,283,660.88
  5. Step 5: Solve for x
    x = 75,719,283,660.88/316,559.84
  6. Step 6: Final answer
    x = 239,194.22

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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.