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Finding the Fourth Proportional to 303,436.32, 455,213.20 and 116,433.28

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Solution

The fourth proportional to 303,436.32, 455,213.20 and 116,433.28 is: 174,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,436.32 : 455,213.20 = 116,433.28 : x
  2. Step 2: Convert to fraction form
    303,436.32/455,213.20 = 116,433.28/x
  3. Step 3: Cross multiply
    303,436.32x = 455,213.20 × 116,433.28
  4. Step 4: Simplify right side
    303,436.32x = 53,001,965,975.30
  5. Step 5: Solve for x
    x = 53,001,965,975.30/303,436.32
  6. Step 6: Final answer
    x = 174,672.45

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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.