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Finding the Fourth Proportional to 118,660, 177,851.76 and 66,044.32

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Solution

The fourth proportional to 118,660, 177,851.76 and 66,044.32 is: 98,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,660 : 177,851.76 = 66,044.32 : x
  2. Step 2: Convert to fraction form
    118,660/177,851.76 = 66,044.32/x
  3. Step 3: Cross multiply
    118,660x = 177,851.76 × 66,044.32
  4. Step 4: Simplify right side
    118,660x = 11,746,098,550.00
  5. Step 5: Solve for x
    x = 11,746,098,550.00/118,660
  6. Step 6: Final answer
    x = 98,989.54

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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.