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Finding the Fourth Proportional to 316,516.59, 436,802.73 and 173,289.96

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Solution

The fourth proportional to 316,516.59, 436,802.73 and 173,289.96 is: 239,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,516.59 : 436,802.73 = 173,289.96 : x
  2. Step 2: Convert to fraction form
    316,516.59/436,802.73 = 173,289.96/x
  3. Step 3: Cross multiply
    316,516.59x = 436,802.73 × 173,289.96
  4. Step 4: Simplify right side
    316,516.59x = 75,693,527,609.59
  5. Step 5: Solve for x
    x = 75,693,527,609.59/316,516.59
  6. Step 6: Final answer
    x = 239,145.53

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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.