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Finding the Fourth Proportional to 84,558.48, 116,691.56 and 51,018

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Solution

The fourth proportional to 84,558.48, 116,691.56 and 51,018 is: 70,405.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,558.48 : 116,691.56 = 51,018 : x
  2. Step 2: Convert to fraction form
    84,558.48/116,691.56 = 51,018/x
  3. Step 3: Cross multiply
    84,558.48x = 116,691.56 × 51,018
  4. Step 4: Simplify right side
    84,558.48x = 5,953,370,008.08
  5. Step 5: Solve for x
    x = 5,953,370,008.08/84,558.48
  6. Step 6: Final answer
    x = 70,405.36

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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.