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Finding the Fourth Proportional to 118,617.64, 177,729.62 and 83,483.48

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Solution

The fourth proportional to 118,617.64, 177,729.62 and 83,483.48 is: 125,086.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,617.64 : 177,729.62 = 83,483.48 : x
  2. Step 2: Convert to fraction form
    118,617.64/177,729.62 = 83,483.48/x
  3. Step 3: Cross multiply
    118,617.64x = 177,729.62 × 83,483.48
  4. Step 4: Simplify right side
    118,617.64x = 14,837,487,203.58
  5. Step 5: Solve for x
    x = 14,837,487,203.58/118,617.64
  6. Step 6: Final answer
    x = 125,086.69

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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.