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Finding the Fourth Proportional to 316,288.94, 436,478.22 and 173,049.56

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Solution

The fourth proportional to 316,288.94, 436,478.22 and 173,049.56 is: 238,808.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,288.94 : 436,478.22 = 173,049.56 : x
  2. Step 2: Convert to fraction form
    316,288.94/436,478.22 = 173,049.56/x
  3. Step 3: Cross multiply
    316,288.94x = 436,478.22 × 173,049.56
  4. Step 4: Simplify right side
    316,288.94x = 75,532,361,738.19
  5. Step 5: Solve for x
    x = 75,532,361,738.19/316,288.94
  6. Step 6: Final answer
    x = 238,808.11

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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.