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Finding the Fourth Proportional to 55,362.45, 82,918.81 and 25,717.90

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Solution

The fourth proportional to 55,362.45, 82,918.81 and 25,717.90 is: 38,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,362.45 : 82,918.81 = 25,717.90 : x
  2. Step 2: Convert to fraction form
    55,362.45/82,918.81 = 25,717.90/x
  3. Step 3: Cross multiply
    55,362.45x = 82,918.81 × 25,717.90
  4. Step 4: Simplify right side
    55,362.45x = 2,132,497,663.70
  5. Step 5: Solve for x
    x = 2,132,497,663.70/55,362.45
  6. Step 6: Final answer
    x = 38,518.85

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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.