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Finding the Fourth Proportional to 127,012.78, 190,606.65 and 43,906.78

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Solution

The fourth proportional to 127,012.78, 190,606.65 and 43,906.78 is: 65,890.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,012.78 : 190,606.65 = 43,906.78 : x
  2. Step 2: Convert to fraction form
    127,012.78/190,606.65 = 43,906.78/x
  3. Step 3: Cross multiply
    127,012.78x = 190,606.65 × 43,906.78
  4. Step 4: Simplify right side
    127,012.78x = 8,368,924,248.09
  5. Step 5: Solve for x
    x = 8,368,924,248.09/127,012.78
  6. Step 6: Final answer
    x = 65,890.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.