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Finding the Fourth Proportional to 55,313.33, 82,911.90 and 30,345.99

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Solution

The fourth proportional to 55,313.33, 82,911.90 and 30,345.99 is: 45,487.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,313.33 : 82,911.90 = 30,345.99 : x
  2. Step 2: Convert to fraction form
    55,313.33/82,911.90 = 30,345.99/x
  3. Step 3: Cross multiply
    55,313.33x = 82,911.90 × 30,345.99
  4. Step 4: Simplify right side
    55,313.33x = 2,516,043,957.54
  5. Step 5: Solve for x
    x = 2,516,043,957.54/55,313.33
  6. Step 6: Final answer
    x = 45,487.12

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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.