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Finding the Fourth Proportional to 20,563.39, 30,699.01 and 19,834.39

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Solution

The fourth proportional to 20,563.39, 30,699.01 and 19,834.39 is: 29,610.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.39 : 30,699.01 = 19,834.39 : x
  2. Step 2: Convert to fraction form
    20,563.39/30,699.01 = 19,834.39/x
  3. Step 3: Cross multiply
    20,563.39x = 30,699.01 × 19,834.39
  4. Step 4: Simplify right side
    20,563.39x = 608,896,136.95
  5. Step 5: Solve for x
    x = 608,896,136.95/20,563.39
  6. Step 6: Final answer
    x = 29,610.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.