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Finding the Fourth Proportional to 23,898.90, 35,805.15 and 20,442.90

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Solution

The fourth proportional to 23,898.90, 35,805.15 and 20,442.90 is: 30,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,898.90 : 35,805.15 = 20,442.90 : x
  2. Step 2: Convert to fraction form
    23,898.90/35,805.15 = 20,442.90/x
  3. Step 3: Cross multiply
    23,898.90x = 35,805.15 × 20,442.90
  4. Step 4: Simplify right side
    23,898.90x = 731,961,100.94
  5. Step 5: Solve for x
    x = 731,961,100.94/23,898.90
  6. Step 6: Final answer
    x = 30,627.40

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1.5x scale

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.