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Finding the Fourth Proportional to 118,959.40, 178,439.10 and 48,802.60

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Solution

The fourth proportional to 118,959.40, 178,439.10 and 48,802.60 is: 73,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,959.40 : 178,439.10 = 48,802.60 : x
  2. Step 2: Convert to fraction form
    118,959.40/178,439.10 = 48,802.60/x
  3. Step 3: Cross multiply
    118,959.40x = 178,439.10 × 48,802.60
  4. Step 4: Simplify right side
    118,959.40x = 8,708,292,021.66
  5. Step 5: Solve for x
    x = 8,708,292,021.66/118,959.40
  6. Step 6: Final answer
    x = 73,203.90

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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.