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Finding the Fourth Proportional to 491,402.70, 737,103.65 and 136,416.56

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Solution

The fourth proportional to 491,402.70, 737,103.65 and 136,416.56 is: 204,624.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,402.70 : 737,103.65 = 136,416.56 : x
  2. Step 2: Convert to fraction form
    491,402.70/737,103.65 = 136,416.56/x
  3. Step 3: Cross multiply
    491,402.70x = 737,103.65 × 136,416.56
  4. Step 4: Simplify right side
    491,402.70x = 100,553,139,928.84
  5. Step 5: Solve for x
    x = 100,553,139,928.84/491,402.70
  6. Step 6: Final answer
    x = 204,624.72

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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.