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Finding the Fourth Proportional to 61,990.84, 85,429.38 and 44,965.72

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Solution

The fourth proportional to 61,990.84, 85,429.38 and 44,965.72 is: 61,967.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,990.84 : 85,429.38 = 44,965.72 : x
  2. Step 2: Convert to fraction form
    61,990.84/85,429.38 = 44,965.72/x
  3. Step 3: Cross multiply
    61,990.84x = 85,429.38 × 44,965.72
  4. Step 4: Simplify right side
    61,990.84x = 3,841,393,580.85
  5. Step 5: Solve for x
    x = 3,841,393,580.85/61,990.84
  6. Step 6: Final answer
    x = 61,967.12

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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.