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Finding the Fourth Proportional to 316,516.48, 436,792.72 and 173,276.52

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Solution

The fourth proportional to 316,516.48, 436,792.72 and 173,276.52 is: 239,121.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,516.48 : 436,792.72 = 173,276.52 : x
  2. Step 2: Convert to fraction form
    316,516.48/436,792.72 = 173,276.52/x
  3. Step 3: Cross multiply
    316,516.48x = 436,792.72 × 173,276.52
  4. Step 4: Simplify right side
    316,516.48x = 75,685,922,482.93
  5. Step 5: Solve for x
    x = 75,685,922,482.93/316,516.48
  6. Step 6: Final answer
    x = 239,121.59

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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.