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Finding the Fourth Proportional to 335,412.40, 501,806.40 and 217,314.40

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Solution

The fourth proportional to 335,412.40, 501,806.40 and 217,314.40 is: 325,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,412.40 : 501,806.40 = 217,314.40 : x
  2. Step 2: Convert to fraction form
    335,412.40/501,806.40 = 217,314.40/x
  3. Step 3: Cross multiply
    335,412.40x = 501,806.40 × 217,314.40
  4. Step 4: Simplify right side
    335,412.40x = 109,049,756,732.16
  5. Step 5: Solve for x
    x = 109,049,756,732.16/335,412.40
  6. Step 6: Final answer
    x = 325,121.42

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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.