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Finding the Fourth Proportional to 118,234.80, 176,840.20 and 105,844.40

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Solution

The fourth proportional to 118,234.80, 176,840.20 and 105,844.40 is: 158,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,234.80 : 176,840.20 = 105,844.40 : x
  2. Step 2: Convert to fraction form
    118,234.80/176,840.20 = 105,844.40/x
  3. Step 3: Cross multiply
    118,234.80x = 176,840.20 × 105,844.40
  4. Step 4: Simplify right side
    118,234.80x = 18,717,544,864.88
  5. Step 5: Solve for x
    x = 18,717,544,864.88/118,234.80
  6. Step 6: Final answer
    x = 158,308.25

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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.