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Finding the Fourth Proportional to 61,801.79, 85,281.80 and 41,685.98

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Solution

The fourth proportional to 61,801.79, 85,281.80 and 41,685.98 is: 57,523.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,801.79 : 85,281.80 = 41,685.98 : x
  2. Step 2: Convert to fraction form
    61,801.79/85,281.80 = 41,685.98/x
  3. Step 3: Cross multiply
    61,801.79x = 85,281.80 × 41,685.98
  4. Step 4: Simplify right side
    61,801.79x = 3,555,054,774.33
  5. Step 5: Solve for x
    x = 3,555,054,774.33/61,801.79
  6. Step 6: Final answer
    x = 57,523.50

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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.