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Finding the Fourth Proportional to 118,231.80, 176,835.70 and 105,841.40

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Solution

The fourth proportional to 118,231.80, 176,835.70 and 105,841.40 is: 158,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,231.80 : 176,835.70 = 105,841.40 : x
  2. Step 2: Convert to fraction form
    118,231.80/176,835.70 = 105,841.40/x
  3. Step 3: Cross multiply
    118,231.80x = 176,835.70 × 105,841.40
  4. Step 4: Simplify right side
    118,231.80x = 18,716,538,057.98
  5. Step 5: Solve for x
    x = 18,716,538,057.98/118,231.80
  6. Step 6: Final answer
    x = 158,303.76

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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.