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Finding the Fourth Proportional to 317,155.60, 437,694.96 and 209,536.84

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Solution

The fourth proportional to 317,155.60, 437,694.96 and 209,536.84 is: 289,174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,155.60 : 437,694.96 = 209,536.84 : x
  2. Step 2: Convert to fraction form
    317,155.60/437,694.96 = 209,536.84/x
  3. Step 3: Cross multiply
    317,155.60x = 437,694.96 × 209,536.84
  4. Step 4: Simplify right side
    317,155.60x = 91,713,218,802.33
  5. Step 5: Solve for x
    x = 91,713,218,802.33/317,155.60
  6. Step 6: Final answer
    x = 289,174.21

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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.