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Finding the Fourth Proportional to 316,511.46, 436,785.08 and 173,270.25

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Solution

The fourth proportional to 316,511.46, 436,785.08 and 173,270.25 is: 239,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,511.46 : 436,785.08 = 173,270.25 : x
  2. Step 2: Convert to fraction form
    316,511.46/436,785.08 = 173,270.25/x
  3. Step 3: Cross multiply
    316,511.46x = 436,785.08 × 173,270.25
  4. Step 4: Simplify right side
    316,511.46x = 75,681,860,007.87
  5. Step 5: Solve for x
    x = 75,681,860,007.87/316,511.46
  6. Step 6: Final answer
    x = 239,112.54

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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.