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Finding the Fourth Proportional to 61,885.49, 85,394.88 and 34,657.79

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Solution

The fourth proportional to 61,885.49, 85,394.88 and 34,657.79 is: 47,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,885.49 : 85,394.88 = 34,657.79 : x
  2. Step 2: Convert to fraction form
    61,885.49/85,394.88 = 34,657.79/x
  3. Step 3: Cross multiply
    61,885.49x = 85,394.88 × 34,657.79
  4. Step 4: Simplify right side
    61,885.49x = 2,959,597,391.14
  5. Step 5: Solve for x
    x = 2,959,597,391.14/61,885.49
  6. Step 6: Final answer
    x = 47,823.77

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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.