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Finding the Fourth Proportional to 61,392.48, 84,733.72 and 39,908.84

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Solution

The fourth proportional to 61,392.48, 84,733.72 and 39,908.84 is: 55,082.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,392.48 : 84,733.72 = 39,908.84 : x
  2. Step 2: Convert to fraction form
    61,392.48/84,733.72 = 39,908.84/x
  3. Step 3: Cross multiply
    61,392.48x = 84,733.72 × 39,908.84
  4. Step 4: Simplify right side
    61,392.48x = 3,381,624,474.08
  5. Step 5: Solve for x
    x = 3,381,624,474.08/61,392.48
  6. Step 6: Final answer
    x = 55,082.06

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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.