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Finding the Fourth Proportional to 104,822.40, 157,233.60 and 84,086.40

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Solution

The fourth proportional to 104,822.40, 157,233.60 and 84,086.40 is: 126,129.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,822.40 : 157,233.60 = 84,086.40 : x
  2. Step 2: Convert to fraction form
    104,822.40/157,233.60 = 84,086.40/x
  3. Step 3: Cross multiply
    104,822.40x = 157,233.60 × 84,086.40
  4. Step 4: Simplify right side
    104,822.40x = 13,221,207,383.04
  5. Step 5: Solve for x
    x = 13,221,207,383.04/104,822.40
  6. Step 6: Final answer
    x = 126,129.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.