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Finding the Fourth Proportional to 316,059.66, 436,081.37 and 186,992.03

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Solution

The fourth proportional to 316,059.66, 436,081.37 and 186,992.03 is: 258,001.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,059.66 : 436,081.37 = 186,992.03 : x
  2. Step 2: Convert to fraction form
    316,059.66/436,081.37 = 186,992.03/x
  3. Step 3: Cross multiply
    316,059.66x = 436,081.37 × 186,992.03
  4. Step 4: Simplify right side
    316,059.66x = 81,543,737,506.11
  5. Step 5: Solve for x
    x = 81,543,737,506.11/316,059.66
  6. Step 6: Final answer
    x = 258,001.09

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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.