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Finding the Fourth Proportional to 223,308.85, 308,180 and 127,813.36

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Solution

The fourth proportional to 223,308.85, 308,180 and 127,813.36 is: 176,390.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,308.85 : 308,180 = 127,813.36 : x
  2. Step 2: Convert to fraction form
    223,308.85/308,180 = 127,813.36/x
  3. Step 3: Cross multiply
    223,308.85x = 308,180 × 127,813.36
  4. Step 4: Simplify right side
    223,308.85x = 39,389,521,284.80
  5. Step 5: Solve for x
    x = 39,389,521,284.80/223,308.85
  6. Step 6: Final answer
    x = 176,390.33

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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.