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Finding the Fourth Proportional to 61,423.70, 92,135.55 and 54,857.30

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Solution

The fourth proportional to 61,423.70, 92,135.55 and 54,857.30 is: 82,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,423.70 : 92,135.55 = 54,857.30 : x
  2. Step 2: Convert to fraction form
    61,423.70/92,135.55 = 54,857.30/x
  3. Step 3: Cross multiply
    61,423.70x = 92,135.55 × 54,857.30
  4. Step 4: Simplify right side
    61,423.70x = 5,054,307,507.02
  5. Step 5: Solve for x
    x = 5,054,307,507.02/61,423.70
  6. Step 6: Final answer
    x = 82,285.95

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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.