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Finding the Fourth Proportional to 93,115.60, 139,709.24 and 43,221.20

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Solution

The fourth proportional to 93,115.60, 139,709.24 and 43,221.20 is: 64,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,115.60 : 139,709.24 = 43,221.20 : x
  2. Step 2: Convert to fraction form
    93,115.60/139,709.24 = 43,221.20/x
  3. Step 3: Cross multiply
    93,115.60x = 139,709.24 × 43,221.20
  4. Step 4: Simplify right side
    93,115.60x = 6,038,401,003.89
  5. Step 5: Solve for x
    x = 6,038,401,003.89/93,115.60
  6. Step 6: Final answer
    x = 64,848.44

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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.