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Finding the Fourth Proportional to 93,505.80, 140,258.70 and 65,512.20

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Solution

The fourth proportional to 93,505.80, 140,258.70 and 65,512.20 is: 98,268.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,505.80 : 140,258.70 = 65,512.20 : x
  2. Step 2: Convert to fraction form
    93,505.80/140,258.70 = 65,512.20/x
  3. Step 3: Cross multiply
    93,505.80x = 140,258.70 × 65,512.20
  4. Step 4: Simplify right side
    93,505.80x = 9,188,656,006.14
  5. Step 5: Solve for x
    x = 9,188,656,006.14/93,505.80
  6. Step 6: Final answer
    x = 98,268.30

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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.