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Finding the Fourth Proportional to 103,810.94, 155,813.26 and 53,247.92

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Solution

The fourth proportional to 103,810.94, 155,813.26 and 53,247.92 is: 79,921.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,810.94 : 155,813.26 = 53,247.92 : x
  2. Step 2: Convert to fraction form
    103,810.94/155,813.26 = 53,247.92/x
  3. Step 3: Cross multiply
    103,810.94x = 155,813.26 × 53,247.92
  4. Step 4: Simplify right side
    103,810.94x = 8,296,732,003.42
  5. Step 5: Solve for x
    x = 8,296,732,003.42/103,810.94
  6. Step 6: Final answer
    x = 79,921.56

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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.