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Finding the Fourth Proportional to 61,607.06, 91,964.92 and 54,133.70

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Solution

The fourth proportional to 61,607.06, 91,964.92 and 54,133.70 is: 80,808.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,607.06 : 91,964.92 = 54,133.70 : x
  2. Step 2: Convert to fraction form
    61,607.06/91,964.92 = 54,133.70/x
  3. Step 3: Cross multiply
    61,607.06x = 91,964.92 × 54,133.70
  4. Step 4: Simplify right side
    61,607.06x = 4,978,401,389.80
  5. Step 5: Solve for x
    x = 4,978,401,389.80/61,607.06
  6. Step 6: Final answer
    x = 80,808.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.