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Finding the Fourth Proportional to 57,805.80, 79,771.53 and 40,602.33

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Solution

The fourth proportional to 57,805.80, 79,771.53 and 40,602.33 is: 56,030.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,805.80 : 79,771.53 = 40,602.33 : x
  2. Step 2: Convert to fraction form
    57,805.80/79,771.53 = 40,602.33/x
  3. Step 3: Cross multiply
    57,805.80x = 79,771.53 × 40,602.33
  4. Step 4: Simplify right side
    57,805.80x = 3,238,909,985.66
  5. Step 5: Solve for x
    x = 3,238,909,985.66/57,805.80
  6. Step 6: Final answer
    x = 56,030.88

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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.