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Finding the Fourth Proportional to 316,585.44, 436,868.64 and 173,347.20

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Solution

The fourth proportional to 316,585.44, 436,868.64 and 173,347.20 is: 239,208.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,585.44 : 436,868.64 = 173,347.20 : x
  2. Step 2: Convert to fraction form
    316,585.44/436,868.64 = 173,347.20/x
  3. Step 3: Cross multiply
    316,585.44x = 436,868.64 × 173,347.20
  4. Step 4: Simplify right side
    316,585.44x = 75,729,955,511.81
  5. Step 5: Solve for x
    x = 75,729,955,511.81/316,585.44
  6. Step 6: Final answer
    x = 239,208.59

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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.