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Finding the Fourth Proportional to 61,728.92, 85,184.68 and 34,504.87

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Solution

The fourth proportional to 61,728.92, 85,184.68 and 34,504.87 is: 47,616.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,728.92 : 85,184.68 = 34,504.87 : x
  2. Step 2: Convert to fraction form
    61,728.92/85,184.68 = 34,504.87/x
  3. Step 3: Cross multiply
    61,728.92x = 85,184.68 × 34,504.87
  4. Step 4: Simplify right side
    61,728.92x = 2,939,286,096.43
  5. Step 5: Solve for x
    x = 2,939,286,096.43/61,728.92
  6. Step 6: Final answer
    x = 47,616.03

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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.