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Finding the Fourth Proportional to 61,197.79, 91,618.37 and 45,472.53

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Solution

The fourth proportional to 61,197.79, 91,618.37 and 45,472.53 is: 68,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,197.79 : 91,618.37 = 45,472.53 : x
  2. Step 2: Convert to fraction form
    61,197.79/91,618.37 = 45,472.53/x
  3. Step 3: Cross multiply
    61,197.79x = 91,618.37 × 45,472.53
  4. Step 4: Simplify right side
    61,197.79x = 4,166,119,078.38
  5. Step 5: Solve for x
    x = 4,166,119,078.38/61,197.79
  6. Step 6: Final answer
    x = 68,076.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.