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Finding the Fourth Proportional to 20,562.90, 30,698.26 and 19,833.90

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Solution

The fourth proportional to 20,562.90, 30,698.26 and 19,833.90 is: 29,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.90 : 30,698.26 = 19,833.90 : x
  2. Step 2: Convert to fraction form
    20,562.90/30,698.26 = 19,833.90/x
  3. Step 3: Cross multiply
    20,562.90x = 30,698.26 × 19,833.90
  4. Step 4: Simplify right side
    20,562.90x = 608,866,219.01
  5. Step 5: Solve for x
    x = 608,866,219.01/20,562.90
  6. Step 6: Final answer
    x = 29,609.94

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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.