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Finding the Fourth Proportional to 57,409.96, 79,218.66 and 33,215.08

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Solution

The fourth proportional to 57,409.96, 79,218.66 and 33,215.08 is: 45,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,409.96 : 79,218.66 = 33,215.08 : x
  2. Step 2: Convert to fraction form
    57,409.96/79,218.66 = 33,215.08/x
  3. Step 3: Cross multiply
    57,409.96x = 79,218.66 × 33,215.08
  4. Step 4: Simplify right side
    57,409.96x = 2,631,254,129.39
  5. Step 5: Solve for x
    x = 2,631,254,129.39/57,409.96
  6. Step 6: Final answer
    x = 45,832.71

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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.