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Finding the Fourth Proportional to 56,871.76, 78,310.92 and 44,896.72

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Solution

The fourth proportional to 56,871.76, 78,310.92 and 44,896.72 is: 61,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,871.76 : 78,310.92 = 44,896.72 : x
  2. Step 2: Convert to fraction form
    56,871.76/78,310.92 = 44,896.72/x
  3. Step 3: Cross multiply
    56,871.76x = 78,310.92 × 44,896.72
  4. Step 4: Simplify right side
    56,871.76x = 3,515,903,448.18
  5. Step 5: Solve for x
    x = 3,515,903,448.18/56,871.76
  6. Step 6: Final answer
    x = 61,821.60

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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.