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Finding the Fourth Proportional to 61,755.60, 85,222.80 and 33,461.28

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Solution

The fourth proportional to 61,755.60, 85,222.80 and 33,461.28 is: 46,176.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,755.60 : 85,222.80 = 33,461.28 : x
  2. Step 2: Convert to fraction form
    61,755.60/85,222.80 = 33,461.28/x
  3. Step 3: Cross multiply
    61,755.60x = 85,222.80 × 33,461.28
  4. Step 4: Simplify right side
    61,755.60x = 2,851,663,973.18
  5. Step 5: Solve for x
    x = 2,851,663,973.18/61,755.60
  6. Step 6: Final answer
    x = 46,176.61

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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.