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Finding the Fourth Proportional to 118,656.91, 177,980.74 and 43,744.65

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Solution

The fourth proportional to 118,656.91, 177,980.74 and 43,744.65 is: 65,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,656.91 : 177,980.74 = 43,744.65 : x
  2. Step 2: Convert to fraction form
    118,656.91/177,980.74 = 43,744.65/x
  3. Step 3: Cross multiply
    118,656.91x = 177,980.74 × 43,744.65
  4. Step 4: Simplify right side
    118,656.91x = 7,785,705,178.04
  5. Step 5: Solve for x
    x = 7,785,705,178.04/118,656.91
  6. Step 6: Final answer
    x = 65,615.27

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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.