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Finding the Fourth Proportional to 71,003.22, 97,989.22 and 40,798.32

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Solution

The fourth proportional to 71,003.22, 97,989.22 and 40,798.32 is: 56,304.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,003.22 : 97,989.22 = 40,798.32 : x
  2. Step 2: Convert to fraction form
    71,003.22/97,989.22 = 40,798.32/x
  3. Step 3: Cross multiply
    71,003.22x = 97,989.22 × 40,798.32
  4. Step 4: Simplify right side
    71,003.22x = 3,997,795,554.11
  5. Step 5: Solve for x
    x = 3,997,795,554.11/71,003.22
  6. Step 6: Final answer
    x = 56,304.43

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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.