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Finding the Fourth Proportional to 55,963.47, 83,945.21 and 38,379.99

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Solution

The fourth proportional to 55,963.47, 83,945.21 and 38,379.99 is: 57,569.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,963.47 : 83,945.21 = 38,379.99 : x
  2. Step 2: Convert to fraction form
    55,963.47/83,945.21 = 38,379.99/x
  3. Step 3: Cross multiply
    55,963.47x = 83,945.21 × 38,379.99
  4. Step 4: Simplify right side
    55,963.47x = 3,221,816,128.45
  5. Step 5: Solve for x
    x = 3,221,816,128.45/55,963.47
  6. Step 6: Final answer
    x = 57,569.99

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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.