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Finding the Fourth Proportional to 127,940.20, 178,883 and 127,940.20

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Solution

The fourth proportional to 127,940.20, 178,883 and 127,940.20 is: 178,883

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940.20 : 178,883 = 127,940.20 : x
  2. Step 2: Convert to fraction form
    127,940.20/178,883 = 127,940.20/x
  3. Step 3: Cross multiply
    127,940.20x = 178,883 × 127,940.20
  4. Step 4: Simplify right side
    127,940.20x = 22,886,326,796.60
  5. Step 5: Solve for x
    x = 22,886,326,796.60/127,940.20
  6. Step 6: Final answer
    x = 178,883

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.