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Finding the Fourth Proportional to 93,840.70, 140,662.64 and 43,878.68

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Solution

The fourth proportional to 93,840.70, 140,662.64 and 43,878.68 is: 65,772.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,840.70 : 140,662.64 = 43,878.68 : x
  2. Step 2: Convert to fraction form
    93,840.70/140,662.64 = 43,878.68/x
  3. Step 3: Cross multiply
    93,840.70x = 140,662.64 × 43,878.68
  4. Step 4: Simplify right side
    93,840.70x = 6,172,090,968.52
  5. Step 5: Solve for x
    x = 6,172,090,968.52/93,840.70
  6. Step 6: Final answer
    x = 65,772.00

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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.