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Finding the Fourth Proportional to 199,300.40, 275,035.41 and 127,721.94

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Solution

The fourth proportional to 199,300.40, 275,035.41 and 127,721.94 is: 176,256.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,300.40 : 275,035.41 = 127,721.94 : x
  2. Step 2: Convert to fraction form
    199,300.40/275,035.41 = 127,721.94/x
  3. Step 3: Cross multiply
    199,300.40x = 275,035.41 × 127,721.94
  4. Step 4: Simplify right side
    199,300.40x = 35,128,056,055.66
  5. Step 5: Solve for x
    x = 35,128,056,055.66/199,300.40
  6. Step 6: Final answer
    x = 176,256.83

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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.