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Finding the Fourth Proportional to 303,780.30, 455,123.70 and 241,013.40

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Solution

The fourth proportional to 303,780.30, 455,123.70 and 241,013.40 is: 361,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,780.30 : 455,123.70 = 241,013.40 : x
  2. Step 2: Convert to fraction form
    303,780.30/455,123.70 = 241,013.40/x
  3. Step 3: Cross multiply
    303,780.30x = 455,123.70 × 241,013.40
  4. Step 4: Simplify right side
    303,780.30x = 109,690,910,357.58
  5. Step 5: Solve for x
    x = 109,690,910,357.58/303,780.30
  6. Step 6: Final answer
    x = 361,086.32

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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.