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Finding the Fourth Proportional to 93,361.05, 139,835.84 and 77,166.72

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Solution

The fourth proportional to 93,361.05, 139,835.84 and 77,166.72 is: 115,580.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,361.05 : 139,835.84 = 77,166.72 : x
  2. Step 2: Convert to fraction form
    93,361.05/139,835.84 = 77,166.72/x
  3. Step 3: Cross multiply
    93,361.05x = 139,835.84 × 77,166.72
  4. Step 4: Simplify right side
    93,361.05x = 10,790,672,725.41
  5. Step 5: Solve for x
    x = 10,790,672,725.41/93,361.05
  6. Step 6: Final answer
    x = 115,580.03

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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.