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Finding the Fourth Proportional to 30,398.86, 41,938.86 and 19,063.54

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Solution

The fourth proportional to 30,398.86, 41,938.86 and 19,063.54 is: 26,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,398.86 : 41,938.86 = 19,063.54 : x
  2. Step 2: Convert to fraction form
    30,398.86/41,938.86 = 19,063.54/x
  3. Step 3: Cross multiply
    30,398.86x = 41,938.86 × 19,063.54
  4. Step 4: Simplify right side
    30,398.86x = 799,503,135.16
  5. Step 5: Solve for x
    x = 799,503,135.16/30,398.86
  6. Step 6: Final answer
    x = 26,300.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.