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Finding the Fourth Proportional to 61,938.91, 85,475.76 and 33,644.60

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Solution

The fourth proportional to 61,938.91, 85,475.76 and 33,644.60 is: 46,429.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,938.91 : 85,475.76 = 33,644.60 : x
  2. Step 2: Convert to fraction form
    61,938.91/85,475.76 = 33,644.60/x
  3. Step 3: Cross multiply
    61,938.91x = 85,475.76 × 33,644.60
  4. Step 4: Simplify right side
    61,938.91x = 2,875,797,521.88
  5. Step 5: Solve for x
    x = 2,875,797,521.88/61,938.91
  6. Step 6: Final answer
    x = 46,429.58

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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.