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Finding the Fourth Proportional to 61,644.06, 85,069.50 and 34,786.89

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Solution

The fourth proportional to 61,644.06, 85,069.50 and 34,786.89 is: 48,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,644.06 : 85,069.50 = 34,786.89 : x
  2. Step 2: Convert to fraction form
    61,644.06/85,069.50 = 34,786.89/x
  3. Step 3: Cross multiply
    61,644.06x = 85,069.50 × 34,786.89
  4. Step 4: Simplify right side
    61,644.06x = 2,959,303,338.86
  5. Step 5: Solve for x
    x = 2,959,303,338.86/61,644.06
  6. Step 6: Final answer
    x = 48,006.30

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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.