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Finding the Fourth Proportional to 61,631, 85,050.70 and 33,336.68

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Solution

The fourth proportional to 61,631, 85,050.70 and 33,336.68 is: 46,004.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,631 : 85,050.70 = 33,336.68 : x
  2. Step 2: Convert to fraction form
    61,631/85,050.70 = 33,336.68/x
  3. Step 3: Cross multiply
    61,631x = 85,050.70 × 33,336.68
  4. Step 4: Simplify right side
    61,631x = 2,835,307,969.68
  5. Step 5: Solve for x
    x = 2,835,307,969.68/61,631
  6. Step 6: Final answer
    x = 46,004.58

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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.