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Finding the Fourth Proportional to 93,134, 139,603.75 and 43,172.90

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Solution

The fourth proportional to 93,134, 139,603.75 and 43,172.90 is: 64,714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,134 : 139,603.75 = 43,172.90 : x
  2. Step 2: Convert to fraction form
    93,134/139,603.75 = 43,172.90/x
  3. Step 3: Cross multiply
    93,134x = 139,603.75 × 43,172.90
  4. Step 4: Simplify right side
    93,134x = 6,027,098,738.38
  5. Step 5: Solve for x
    x = 6,027,098,738.38/93,134
  6. Step 6: Final answer
    x = 64,714.27

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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.