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Finding the Fourth Proportional to 496,716.61, 745,200.67 and 141,731.88

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Solution

The fourth proportional to 496,716.61, 745,200.67 and 141,731.88 is: 212,633.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,716.61 : 745,200.67 = 141,731.88 : x
  2. Step 2: Convert to fraction form
    496,716.61/745,200.67 = 141,731.88/x
  3. Step 3: Cross multiply
    496,716.61x = 745,200.67 × 141,731.88
  4. Step 4: Simplify right side
    496,716.61x = 105,618,691,936.36
  5. Step 5: Solve for x
    x = 105,618,691,936.36/496,716.61
  6. Step 6: Final answer
    x = 212,633.70

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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.