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Finding the Fourth Proportional to 316,612.03, 436,908.31 and 173,344.36

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Solution

The fourth proportional to 316,612.03, 436,908.31 and 173,344.36 is: 239,206.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,612.03 : 436,908.31 = 173,344.36 : x
  2. Step 2: Convert to fraction form
    316,612.03/436,908.31 = 173,344.36/x
  3. Step 3: Cross multiply
    316,612.03x = 436,908.31 × 173,344.36
  4. Step 4: Simplify right side
    316,612.03x = 75,735,589,355.82
  5. Step 5: Solve for x
    x = 75,735,589,355.82/316,612.03
  6. Step 6: Final answer
    x = 239,206.29

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1.5x scale

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.