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Finding the Fourth Proportional to 57,607.20, 81,615.60 and 57,607.20

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Solution

The fourth proportional to 57,607.20, 81,615.60 and 57,607.20 is: 81,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,607.20 : 81,615.60 = 57,607.20 : x
  2. Step 2: Convert to fraction form
    57,607.20/81,615.60 = 57,607.20/x
  3. Step 3: Cross multiply
    57,607.20x = 81,615.60 × 57,607.20
  4. Step 4: Simplify right side
    57,607.20x = 4,701,646,192.32
  5. Step 5: Solve for x
    x = 4,701,646,192.32/57,607.20
  6. Step 6: Final answer
    x = 81,615.60

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These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.