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Finding the Fourth Proportional to 72,311.90, 97,310.03 and 72,311.90

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Solution

The fourth proportional to 72,311.90, 97,310.03 and 72,311.90 is: 97,310.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,311.90 : 97,310.03 = 72,311.90 : x
  2. Step 2: Convert to fraction form
    72,311.90/97,310.03 = 72,311.90/x
  3. Step 3: Cross multiply
    72,311.90x = 97,310.03 × 72,311.90
  4. Step 4: Simplify right side
    72,311.90x = 7,036,672,796.80
  5. Step 5: Solve for x
    x = 7,036,672,796.80/72,311.90
  6. Step 6: Final answer
    x = 97,310.03

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.