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Finding the Fourth Proportional to 56,515.64, 84,755.82 and 19,571

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Solution

The fourth proportional to 56,515.64, 84,755.82 and 19,571 is: 29,350.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,515.64 : 84,755.82 = 19,571 : x
  2. Step 2: Convert to fraction form
    56,515.64/84,755.82 = 19,571/x
  3. Step 3: Cross multiply
    56,515.64x = 84,755.82 × 19,571
  4. Step 4: Simplify right side
    56,515.64x = 1,658,756,153.22
  5. Step 5: Solve for x
    x = 1,658,756,153.22/56,515.64
  6. Step 6: Final answer
    x = 29,350.39

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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.