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Finding the Fourth Proportional to 127,999.60, 192,218.10 and 83,822.20

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Solution

The fourth proportional to 127,999.60, 192,218.10 and 83,822.20 is: 125,876.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,999.60 : 192,218.10 = 83,822.20 : x
  2. Step 2: Convert to fraction form
    127,999.60/192,218.10 = 83,822.20/x
  3. Step 3: Cross multiply
    127,999.60x = 192,218.10 × 83,822.20
  4. Step 4: Simplify right side
    127,999.60x = 16,112,144,021.82
  5. Step 5: Solve for x
    x = 16,112,144,021.82/127,999.60
  6. Step 6: Final answer
    x = 125,876.52

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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.