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Finding the Fourth Proportional to 209,755.62, 314,907.87 and 124,522.11

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Solution

The fourth proportional to 209,755.62, 314,907.87 and 124,522.11 is: 186,946.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,755.62 : 314,907.87 = 124,522.11 : x
  2. Step 2: Convert to fraction form
    209,755.62/314,907.87 = 124,522.11/x
  3. Step 3: Cross multiply
    209,755.62x = 314,907.87 × 124,522.11
  4. Step 4: Simplify right side
    209,755.62x = 39,212,992,428.01
  5. Step 5: Solve for x
    x = 39,212,992,428.01/209,755.62
  6. Step 6: Final answer
    x = 186,946.09

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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.