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Finding the Fourth Proportional to 61,878.18, 85,391.39 and 33,583.87

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Solution

The fourth proportional to 61,878.18, 85,391.39 and 33,583.87 is: 46,345.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.18 : 85,391.39 = 33,583.87 : x
  2. Step 2: Convert to fraction form
    61,878.18/85,391.39 = 33,583.87/x
  3. Step 3: Cross multiply
    61,878.18x = 85,391.39 × 33,583.87
  4. Step 4: Simplify right side
    61,878.18x = 2,867,773,340.88
  5. Step 5: Solve for x
    x = 2,867,773,340.88/61,878.18
  6. Step 6: Final answer
    x = 46,345.47

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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.