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Finding the Fourth Proportional to 316,603.62, 436,912.74 and 173,366.46

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Solution

The fourth proportional to 316,603.62, 436,912.74 and 173,366.46 is: 239,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,603.62 : 436,912.74 = 173,366.46 : x
  2. Step 2: Convert to fraction form
    316,603.62/436,912.74 = 173,366.46/x
  3. Step 3: Cross multiply
    316,603.62x = 436,912.74 × 173,366.46
  4. Step 4: Simplify right side
    316,603.62x = 75,746,015,062.70
  5. Step 5: Solve for x
    x = 75,746,015,062.70/316,603.62
  6. Step 6: Final answer
    x = 239,245.57

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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.