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Finding the Fourth Proportional to 57,750.68, 79,715.13 and 33,868.64

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Solution

The fourth proportional to 57,750.68, 79,715.13 and 33,868.64 is: 46,749.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,750.68 : 79,715.13 = 33,868.64 : x
  2. Step 2: Convert to fraction form
    57,750.68/79,715.13 = 33,868.64/x
  3. Step 3: Cross multiply
    57,750.68x = 79,715.13 × 33,868.64
  4. Step 4: Simplify right side
    57,750.68x = 2,699,843,040.52
  5. Step 5: Solve for x
    x = 2,699,843,040.52/57,750.68
  6. Step 6: Final answer
    x = 46,749.98

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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.