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Finding the Fourth Proportional to 61,753.76, 85,220.16 and 33,459.20

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Solution

The fourth proportional to 61,753.76, 85,220.16 and 33,459.20 is: 46,173.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,753.76 : 85,220.16 = 33,459.20 : x
  2. Step 2: Convert to fraction form
    61,753.76/85,220.16 = 33,459.20/x
  3. Step 3: Cross multiply
    61,753.76x = 85,220.16 × 33,459.20
  4. Step 4: Simplify right side
    61,753.76x = 2,851,398,377.47
  5. Step 5: Solve for x
    x = 2,851,398,377.47/61,753.76
  6. Step 6: Final answer
    x = 46,173.68

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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.