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Finding the Fourth Proportional to 93,459.60, 140,221.80 and 40,906.80

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Solution

The fourth proportional to 93,459.60, 140,221.80 and 40,906.80 is: 61,374.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,459.60 : 140,221.80 = 40,906.80 : x
  2. Step 2: Convert to fraction form
    93,459.60/140,221.80 = 40,906.80/x
  3. Step 3: Cross multiply
    93,459.60x = 140,221.80 × 40,906.80
  4. Step 4: Simplify right side
    93,459.60x = 5,736,025,128.24
  5. Step 5: Solve for x
    x = 5,736,025,128.24/93,459.60
  6. Step 6: Final answer
    x = 61,374.38

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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.