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Finding the Fourth Proportional to 57,795.72, 79,686.36 and 48,697.80

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Solution

The fourth proportional to 57,795.72, 79,686.36 and 48,697.80 is: 67,142.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,795.72 : 79,686.36 = 48,697.80 : x
  2. Step 2: Convert to fraction form
    57,795.72/79,686.36 = 48,697.80/x
  3. Step 3: Cross multiply
    57,795.72x = 79,686.36 × 48,697.80
  4. Step 4: Simplify right side
    57,795.72x = 3,880,550,422.01
  5. Step 5: Solve for x
    x = 3,880,550,422.01/57,795.72
  6. Step 6: Final answer
    x = 67,142.52

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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.