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Finding the Fourth Proportional to 35,419.84, 48,879.30 and 19,286.90

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Solution

The fourth proportional to 35,419.84, 48,879.30 and 19,286.90 is: 26,615.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,419.84 : 48,879.30 = 19,286.90 : x
  2. Step 2: Convert to fraction form
    35,419.84/48,879.30 = 19,286.90/x
  3. Step 3: Cross multiply
    35,419.84x = 48,879.30 × 19,286.90
  4. Step 4: Simplify right side
    35,419.84x = 942,730,243.50
  5. Step 5: Solve for x
    x = 942,730,243.50/35,419.84
  6. Step 6: Final answer
    x = 26,615.88

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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.