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Finding the Fourth Proportional to 93,245.32, 139,756.92 and 53,720.56

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Solution

The fourth proportional to 93,245.32, 139,756.92 and 53,720.56 is: 80,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,245.32 : 139,756.92 = 53,720.56 : x
  2. Step 2: Convert to fraction form
    93,245.32/139,756.92 = 53,720.56/x
  3. Step 3: Cross multiply
    93,245.32x = 139,756.92 × 53,720.56
  4. Step 4: Simplify right side
    93,245.32x = 7,507,820,006.28
  5. Step 5: Solve for x
    x = 7,507,820,006.28/93,245.32
  6. Step 6: Final answer
    x = 80,516.86

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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.