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Finding the Fourth Proportional to 35,322.74, 48,745.60 and 19,406.78

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Solution

The fourth proportional to 35,322.74, 48,745.60 and 19,406.78 is: 26,781.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,322.74 : 48,745.60 = 19,406.78 : x
  2. Step 2: Convert to fraction form
    35,322.74/48,745.60 = 19,406.78/x
  3. Step 3: Cross multiply
    35,322.74x = 48,745.60 × 19,406.78
  4. Step 4: Simplify right side
    35,322.74x = 945,995,135.17
  5. Step 5: Solve for x
    x = 945,995,135.17/35,322.74
  6. Step 6: Final answer
    x = 26,781.48

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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.