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Finding the Fourth Proportional to 127,112.60, 190,887.60 and 82,935.20

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Solution

The fourth proportional to 127,112.60, 190,887.60 and 82,935.20 is: 124,545.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,112.60 : 190,887.60 = 82,935.20 : x
  2. Step 2: Convert to fraction form
    127,112.60/190,887.60 = 82,935.20/x
  3. Step 3: Cross multiply
    127,112.60x = 190,887.60 × 82,935.20
  4. Step 4: Simplify right side
    127,112.60x = 15,831,301,283.52
  5. Step 5: Solve for x
    x = 15,831,301,283.52/127,112.60
  6. Step 6: Final answer
    x = 124,545.49

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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.