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Finding the Fourth Proportional to 57,390.76, 79,186.95 and 33,506.60

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Solution

The fourth proportional to 57,390.76, 79,186.95 and 33,506.60 is: 46,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,390.76 : 79,186.95 = 33,506.60 : x
  2. Step 2: Convert to fraction form
    57,390.76/79,186.95 = 33,506.60/x
  3. Step 3: Cross multiply
    57,390.76x = 79,186.95 × 33,506.60
  4. Step 4: Simplify right side
    57,390.76x = 2,653,285,062.94
  5. Step 5: Solve for x
    x = 2,653,285,062.94/57,390.76
  6. Step 6: Final answer
    x = 46,231.92

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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.