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Finding the Fourth Proportional to 61,878.01, 85,391.68 and 33,583.69

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Solution

The fourth proportional to 61,878.01, 85,391.68 and 33,583.69 is: 46,345.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.01 : 85,391.68 = 33,583.69 : x
  2. Step 2: Convert to fraction form
    61,878.01/85,391.68 = 33,583.69/x
  3. Step 3: Cross multiply
    61,878.01x = 85,391.68 × 33,583.69
  4. Step 4: Simplify right side
    61,878.01x = 2,867,767,709.70
  5. Step 5: Solve for x
    x = 2,867,767,709.70/61,878.01
  6. Step 6: Final answer
    x = 46,345.51

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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.