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Finding the Fourth Proportional to 161,891.74, 242,813.91 and 117,126.58

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Solution

The fourth proportional to 161,891.74, 242,813.91 and 117,126.58 is: 175,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,891.74 : 242,813.91 = 117,126.58 : x
  2. Step 2: Convert to fraction form
    161,891.74/242,813.91 = 117,126.58/x
  3. Step 3: Cross multiply
    161,891.74x = 242,813.91 × 117,126.58
  4. Step 4: Simplify right side
    161,891.74x = 28,439,962,854.73
  5. Step 5: Solve for x
    x = 28,439,962,854.73/161,891.74
  6. Step 6: Final answer
    x = 175,672.72

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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.