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Finding the Fourth Proportional to 57,848.80, 86,578.80 and 40,352.80

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Solution

The fourth proportional to 57,848.80, 86,578.80 and 40,352.80 is: 60,393.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,848.80 : 86,578.80 = 40,352.80 : x
  2. Step 2: Convert to fraction form
    57,848.80/86,578.80 = 40,352.80/x
  3. Step 3: Cross multiply
    57,848.80x = 86,578.80 × 40,352.80
  4. Step 4: Simplify right side
    57,848.80x = 3,493,697,000.64
  5. Step 5: Solve for x
    x = 3,493,697,000.64/57,848.80
  6. Step 6: Final answer
    x = 60,393.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.