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Finding the Fourth Proportional to 100,553.47, 150,893.79 and 56,209.35

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Solution

The fourth proportional to 100,553.47, 150,893.79 and 56,209.35 is: 84,349.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,553.47 : 150,893.79 = 56,209.35 : x
  2. Step 2: Convert to fraction form
    100,553.47/150,893.79 = 56,209.35/x
  3. Step 3: Cross multiply
    100,553.47x = 150,893.79 × 56,209.35
  4. Step 4: Simplify right side
    100,553.47x = 8,481,641,854.94
  5. Step 5: Solve for x
    x = 8,481,641,854.94/100,553.47
  6. Step 6: Final answer
    x = 84,349.57

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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.