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Finding the Fourth Proportional to 61,867.72, 85,357.80 and 36,365.92

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Solution

The fourth proportional to 61,867.72, 85,357.80 and 36,365.92 is: 50,173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,867.72 : 85,357.80 = 36,365.92 : x
  2. Step 2: Convert to fraction form
    61,867.72/85,357.80 = 36,365.92/x
  3. Step 3: Cross multiply
    61,867.72x = 85,357.80 × 36,365.92
  4. Step 4: Simplify right side
    61,867.72x = 3,104,114,926.18
  5. Step 5: Solve for x
    x = 3,104,114,926.18/61,867.72
  6. Step 6: Final answer
    x = 50,173.42

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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.