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Finding the Fourth Proportional to 69,251.48, 95,728.40 and 61,771.94

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Solution

The fourth proportional to 69,251.48, 95,728.40 and 61,771.94 is: 85,389.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,251.48 : 95,728.40 = 61,771.94 : x
  2. Step 2: Convert to fraction form
    69,251.48/95,728.40 = 61,771.94/x
  3. Step 3: Cross multiply
    69,251.48x = 95,728.40 × 61,771.94
  4. Step 4: Simplify right side
    69,251.48x = 5,913,328,981.10
  5. Step 5: Solve for x
    x = 5,913,328,981.10/69,251.48
  6. Step 6: Final answer
    x = 85,389.21

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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.