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Finding the Fourth Proportional to 61,721.84, 85,176.06 and 33,427.64

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Solution

The fourth proportional to 61,721.84, 85,176.06 and 33,427.64 is: 46,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,721.84 : 85,176.06 = 33,427.64 : x
  2. Step 2: Convert to fraction form
    61,721.84/85,176.06 = 33,427.64/x
  3. Step 3: Cross multiply
    61,721.84x = 85,176.06 × 33,427.64
  4. Step 4: Simplify right side
    61,721.84x = 2,847,234,670.30
  5. Step 5: Solve for x
    x = 2,847,234,670.30/61,721.84
  6. Step 6: Final answer
    x = 46,130.10

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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.