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Finding the Fourth Proportional to 353,696.28, 530,224.42 and 129,004.08

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Solution

The fourth proportional to 353,696.28, 530,224.42 and 129,004.08 is: 193,389.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,696.28 : 530,224.42 = 129,004.08 : x
  2. Step 2: Convert to fraction form
    353,696.28/530,224.42 = 129,004.08/x
  3. Step 3: Cross multiply
    353,696.28x = 530,224.42 × 129,004.08
  4. Step 4: Simplify right side
    353,696.28x = 68,401,113,495.63
  5. Step 5: Solve for x
    x = 68,401,113,495.63/353,696.28
  6. Step 6: Final answer
    x = 193,389.41

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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.