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Finding the Fourth Proportional to 132,051.40, 198,102.70 and 66,387.40

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Solution

The fourth proportional to 132,051.40, 198,102.70 and 66,387.40 is: 99,593.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,051.40 : 198,102.70 = 66,387.40 : x
  2. Step 2: Convert to fraction form
    132,051.40/198,102.70 = 66,387.40/x
  3. Step 3: Cross multiply
    132,051.40x = 198,102.70 × 66,387.40
  4. Step 4: Simplify right side
    132,051.40x = 13,151,523,185.98
  5. Step 5: Solve for x
    x = 13,151,523,185.98/132,051.40
  6. Step 6: Final answer
    x = 99,593.97

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