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Finding the Fourth Proportional to 93,138.30, 139,709.85 and 34,018.02

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Solution

The fourth proportional to 93,138.30, 139,709.85 and 34,018.02 is: 51,027.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,138.30 : 139,709.85 = 34,018.02 : x
  2. Step 2: Convert to fraction form
    93,138.30/139,709.85 = 34,018.02/x
  3. Step 3: Cross multiply
    93,138.30x = 139,709.85 × 34,018.02
  4. Step 4: Simplify right side
    93,138.30x = 4,752,652,471.50
  5. Step 5: Solve for x
    x = 4,752,652,471.50/93,138.30
  6. Step 6: Final answer
    x = 51,027.91

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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.