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Finding the Fourth Proportional to 127,806.66, 176,370.41 and 74,090.30

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Solution

The fourth proportional to 127,806.66, 176,370.41 and 74,090.30 is: 102,243.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,806.66 : 176,370.41 = 74,090.30 : x
  2. Step 2: Convert to fraction form
    127,806.66/176,370.41 = 74,090.30/x
  3. Step 3: Cross multiply
    127,806.66x = 176,370.41 × 74,090.30
  4. Step 4: Simplify right side
    127,806.66x = 13,067,335,891.40
  5. Step 5: Solve for x
    x = 13,067,335,891.40/127,806.66
  6. Step 6: Final answer
    x = 102,243.00

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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.