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Finding the Fourth Proportional to 221,636.40, 332,663.40 and 116,530.80

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Solution

The fourth proportional to 221,636.40, 332,663.40 and 116,530.80 is: 174,905.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,636.40 : 332,663.40 = 116,530.80 : x
  2. Step 2: Convert to fraction form
    221,636.40/332,663.40 = 116,530.80/x
  3. Step 3: Cross multiply
    221,636.40x = 332,663.40 × 116,530.80
  4. Step 4: Simplify right side
    221,636.40x = 38,765,532,132.72
  5. Step 5: Solve for x
    x = 38,765,532,132.72/221,636.40
  6. Step 6: Final answer
    x = 174,905.98

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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.