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Finding the Fourth Proportional to 72,890.88, 100,587.51 and 41,057.88

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Solution

The fourth proportional to 72,890.88, 100,587.51 and 41,057.88 is: 56,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,890.88 : 100,587.51 = 41,057.88 : x
  2. Step 2: Convert to fraction form
    72,890.88/100,587.51 = 41,057.88/x
  3. Step 3: Cross multiply
    72,890.88x = 100,587.51 × 41,057.88
  4. Step 4: Simplify right side
    72,890.88x = 4,129,909,915.08
  5. Step 5: Solve for x
    x = 4,129,909,915.08/72,890.88
  6. Step 6: Final answer
    x = 56,658.80

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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.