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Finding the Fourth Proportional to 68,751.72, 94,828.82 and 58,516.60

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Solution

The fourth proportional to 68,751.72, 94,828.82 and 58,516.60 is: 80,711.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,751.72 : 94,828.82 = 58,516.60 : x
  2. Step 2: Convert to fraction form
    68,751.72/94,828.82 = 58,516.60/x
  3. Step 3: Cross multiply
    68,751.72x = 94,828.82 × 58,516.60
  4. Step 4: Simplify right side
    68,751.72x = 5,549,060,128.41
  5. Step 5: Solve for x
    x = 5,549,060,128.41/68,751.72
  6. Step 6: Final answer
    x = 80,711.58

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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.