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Finding the Fourth Proportional to 177,876, 245,527.20 and 127,720.80

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Solution

The fourth proportional to 177,876, 245,527.20 and 127,720.80 is: 176,296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,876 : 245,527.20 = 127,720.80 : x
  2. Step 2: Convert to fraction form
    177,876/245,527.20 = 127,720.80/x
  3. Step 3: Cross multiply
    177,876x = 245,527.20 × 127,720.80
  4. Step 4: Simplify right side
    177,876x = 31,358,930,405.76
  5. Step 5: Solve for x
    x = 31,358,930,405.76/177,876
  6. Step 6: Final answer
    x = 176,296.58

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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.