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Finding the Fourth Proportional to 61,960, 85,501.60 and 33,664.96

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Solution

The fourth proportional to 61,960, 85,501.60 and 33,664.96 is: 46,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,960 : 85,501.60 = 33,664.96 : x
  2. Step 2: Convert to fraction form
    61,960/85,501.60 = 33,664.96/x
  3. Step 3: Cross multiply
    61,960x = 85,501.60 × 33,664.96
  4. Step 4: Simplify right side
    61,960x = 2,878,407,943.94
  5. Step 5: Solve for x
    x = 2,878,407,943.94/61,960
  6. Step 6: Final answer
    x = 46,455.91

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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.