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Finding the Fourth Proportional to 127,580.60, 176,092.47 and 98,843.42

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Solution

The fourth proportional to 127,580.60, 176,092.47 and 98,843.42 is: 136,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,580.60 : 176,092.47 = 98,843.42 : x
  2. Step 2: Convert to fraction form
    127,580.60/176,092.47 = 98,843.42/x
  3. Step 3: Cross multiply
    127,580.60x = 176,092.47 × 98,843.42
  4. Step 4: Simplify right side
    127,580.60x = 17,405,581,090.59
  5. Step 5: Solve for x
    x = 17,405,581,090.59/127,580.60
  6. Step 6: Final answer
    x = 136,428.12

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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.