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Finding the Fourth Proportional to 118,153.80, 177,360.30 and 73,830.60

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Solution

The fourth proportional to 118,153.80, 177,360.30 and 73,830.60 is: 110,826.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,153.80 : 177,360.30 = 73,830.60 : x
  2. Step 2: Convert to fraction form
    118,153.80/177,360.30 = 73,830.60/x
  3. Step 3: Cross multiply
    118,153.80x = 177,360.30 × 73,830.60
  4. Step 4: Simplify right side
    118,153.80x = 13,094,617,365.18
  5. Step 5: Solve for x
    x = 13,094,617,365.18/118,153.80
  6. Step 6: Final answer
    x = 110,826.88

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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.