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Finding the Fourth Proportional to 61,649.76, 85,076.64 and 34,797.90

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Solution

The fourth proportional to 61,649.76, 85,076.64 and 34,797.90 is: 48,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,649.76 : 85,076.64 = 34,797.90 : x
  2. Step 2: Convert to fraction form
    61,649.76/85,076.64 = 34,797.90/x
  3. Step 3: Cross multiply
    61,649.76x = 85,076.64 × 34,797.90
  4. Step 4: Simplify right side
    61,649.76x = 2,960,488,411.06
  5. Step 5: Solve for x
    x = 2,960,488,411.06/61,649.76
  6. Step 6: Final answer
    x = 48,021.09

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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.