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Finding the Fourth Proportional to 93,344.10, 139,906.80 and 69,943.20

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Solution

The fourth proportional to 93,344.10, 139,906.80 and 69,943.20 is: 104,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,344.10 : 139,906.80 = 69,943.20 : x
  2. Step 2: Convert to fraction form
    93,344.10/139,906.80 = 69,943.20/x
  3. Step 3: Cross multiply
    93,344.10x = 139,906.80 × 69,943.20
  4. Step 4: Simplify right side
    93,344.10x = 9,785,529,293.76
  5. Step 5: Solve for x
    x = 9,785,529,293.76/93,344.10
  6. Step 6: Final answer
    x = 104,832.86

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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.