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Finding the Fourth Proportional to 93,740.60, 140,446.88 and 78,046.49

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Solution

The fourth proportional to 93,740.60, 140,446.88 and 78,046.49 is: 116,933.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,740.60 : 140,446.88 = 78,046.49 : x
  2. Step 2: Convert to fraction form
    93,740.60/140,446.88 = 78,046.49/x
  3. Step 3: Cross multiply
    93,740.60x = 140,446.88 × 78,046.49
  4. Step 4: Simplify right side
    93,740.60x = 10,961,386,015.45
  5. Step 5: Solve for x
    x = 10,961,386,015.45/93,740.60
  6. Step 6: Final answer
    x = 116,933.18

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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.