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Finding the Fourth Proportional to 353,806.24, 530,916.72 and 253,858.72

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Solution

The fourth proportional to 353,806.24, 530,916.72 and 253,858.72 is: 380,936.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,806.24 : 530,916.72 = 253,858.72 : x
  2. Step 2: Convert to fraction form
    353,806.24/530,916.72 = 253,858.72/x
  3. Step 3: Cross multiply
    353,806.24x = 530,916.72 × 253,858.72
  4. Step 4: Simplify right side
    353,806.24x = 134,777,838,965.80
  5. Step 5: Solve for x
    x = 134,777,838,965.80/353,806.24
  6. Step 6: Final answer
    x = 380,936.86

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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.