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Finding the Fourth Proportional to 223,696.89, 308,692.62 and 128,137.14

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Solution

The fourth proportional to 223,696.89, 308,692.62 and 128,137.14 is: 176,824.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,696.89 : 308,692.62 = 128,137.14 : x
  2. Step 2: Convert to fraction form
    223,696.89/308,692.62 = 128,137.14/x
  3. Step 3: Cross multiply
    223,696.89x = 308,692.62 × 128,137.14
  4. Step 4: Simplify right side
    223,696.89x = 39,554,989,465.91
  5. Step 5: Solve for x
    x = 39,554,989,465.91/223,696.89
  6. Step 6: Final answer
    x = 176,824.05

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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.