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Finding the Fourth Proportional to 61,618.89, 85,034.90 and 34,761.32

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Solution

The fourth proportional to 61,618.89, 85,034.90 and 34,761.32 is: 47,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,618.89 : 85,034.90 = 34,761.32 : x
  2. Step 2: Convert to fraction form
    61,618.89/85,034.90 = 34,761.32/x
  3. Step 3: Cross multiply
    61,618.89x = 85,034.90 × 34,761.32
  4. Step 4: Simplify right side
    61,618.89x = 2,955,924,771.09
  5. Step 5: Solve for x
    x = 2,955,924,771.09/61,618.89
  6. Step 6: Final answer
    x = 47,971.08

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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.