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Finding the Fourth Proportional to 101,861.48, 140,566.84 and 56,540.00

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Solution

The fourth proportional to 101,861.48, 140,566.84 and 56,540.00 is: 78,024.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,861.48 : 140,566.84 = 56,540.00 : x
  2. Step 2: Convert to fraction form
    101,861.48/140,566.84 = 56,540.00/x
  3. Step 3: Cross multiply
    101,861.48x = 140,566.84 × 56,540.00
  4. Step 4: Simplify right side
    101,861.48x = 7,947,649,343.67
  5. Step 5: Solve for x
    x = 7,947,649,343.67/101,861.48
  6. Step 6: Final answer
    x = 78,024.09

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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.