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Finding the Fourth Proportional to 61,769.21, 85,240.90 and 34,544.99

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Solution

The fourth proportional to 61,769.21, 85,240.90 and 34,544.99 is: 47,671.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,769.21 : 85,240.90 = 34,544.99 : x
  2. Step 2: Convert to fraction form
    61,769.21/85,240.90 = 34,544.99/x
  3. Step 3: Cross multiply
    61,769.21x = 85,240.90 × 34,544.99
  4. Step 4: Simplify right side
    61,769.21x = 2,944,646,038.09
  5. Step 5: Solve for x
    x = 2,944,646,038.09/61,769.21
  6. Step 6: Final answer
    x = 47,671.75

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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.