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Finding the Fourth Proportional to 61,780.64, 85,262.60 and 34,927.92

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Solution

The fourth proportional to 61,780.64, 85,262.60 and 34,927.92 is: 48,203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,780.64 : 85,262.60 = 34,927.92 : x
  2. Step 2: Convert to fraction form
    61,780.64/85,262.60 = 34,927.92/x
  3. Step 3: Cross multiply
    61,780.64x = 85,262.60 × 34,927.92
  4. Step 4: Simplify right side
    61,780.64x = 2,978,045,271.79
  5. Step 5: Solve for x
    x = 2,978,045,271.79/61,780.64
  6. Step 6: Final answer
    x = 48,203.54

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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.