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Finding the Fourth Proportional to 118,530.80, 177,844.80 and 43,686.80

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Solution

The fourth proportional to 118,530.80, 177,844.80 and 43,686.80 is: 65,548.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,530.80 : 177,844.80 = 43,686.80 : x
  2. Step 2: Convert to fraction form
    118,530.80/177,844.80 = 43,686.80/x
  3. Step 3: Cross multiply
    118,530.80x = 177,844.80 × 43,686.80
  4. Step 4: Simplify right side
    118,530.80x = 7,769,470,208.64
  5. Step 5: Solve for x
    x = 7,769,470,208.64/118,530.80
  6. Step 6: Final answer
    x = 65,548.11

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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.