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Finding the Fourth Proportional to 93,663.60, 140,203.80 and 54,103.20

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Solution

The fourth proportional to 93,663.60, 140,203.80 and 54,103.20 is: 80,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,663.60 : 140,203.80 = 54,103.20 : x
  2. Step 2: Convert to fraction form
    93,663.60/140,203.80 = 54,103.20/x
  3. Step 3: Cross multiply
    93,663.60x = 140,203.80 × 54,103.20
  4. Step 4: Simplify right side
    93,663.60x = 7,585,474,232.16
  5. Step 5: Solve for x
    x = 7,585,474,232.16/93,663.60
  6. Step 6: Final answer
    x = 80,986.36

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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.