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Finding the Fourth Proportional to 127,891.88, 176,487.28 and 74,173.48

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Solution

The fourth proportional to 127,891.88, 176,487.28 and 74,173.48 is: 102,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,891.88 : 176,487.28 = 74,173.48 : x
  2. Step 2: Convert to fraction form
    127,891.88/176,487.28 = 74,173.48/x
  3. Step 3: Cross multiply
    127,891.88x = 176,487.28 × 74,173.48
  4. Step 4: Simplify right side
    127,891.88x = 13,090,675,733.33
  5. Step 5: Solve for x
    x = 13,090,675,733.33/127,891.88
  6. Step 6: Final answer
    x = 102,357.36

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1.5x scale

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.