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Finding the Fourth Proportional to 113,852.40, 170,663.40 and 67,081.20

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Solution

The fourth proportional to 113,852.40, 170,663.40 and 67,081.20 is: 100,553.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,852.40 : 170,663.40 = 67,081.20 : x
  2. Step 2: Convert to fraction form
    113,852.40/170,663.40 = 67,081.20/x
  3. Step 3: Cross multiply
    113,852.40x = 170,663.40 × 67,081.20
  4. Step 4: Simplify right side
    113,852.40x = 11,448,305,668.08
  5. Step 5: Solve for x
    x = 11,448,305,668.08/113,852.40
  6. Step 6: Final answer
    x = 100,553.92

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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.