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Finding the Fourth Proportional to 61,972.30, 85,519.92 and 33,678.01

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Solution

The fourth proportional to 61,972.30, 85,519.92 and 33,678.01 is: 46,474.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,972.30 : 85,519.92 = 33,678.01 : x
  2. Step 2: Convert to fraction form
    61,972.30/85,519.92 = 33,678.01/x
  3. Step 3: Cross multiply
    61,972.30x = 85,519.92 × 33,678.01
  4. Step 4: Simplify right side
    61,972.30x = 2,880,140,720.96
  5. Step 5: Solve for x
    x = 2,880,140,720.96/61,972.30
  6. Step 6: Final answer
    x = 46,474.65

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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.