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Finding the Fourth Proportional to 131,205.70, 196,808.55 and 91,807.30

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Solution

The fourth proportional to 131,205.70, 196,808.55 and 91,807.30 is: 137,710.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,205.70 : 196,808.55 = 91,807.30 : x
  2. Step 2: Convert to fraction form
    131,205.70/196,808.55 = 91,807.30/x
  3. Step 3: Cross multiply
    131,205.70x = 196,808.55 × 91,807.30
  4. Step 4: Simplify right side
    131,205.70x = 18,068,461,592.42
  5. Step 5: Solve for x
    x = 18,068,461,592.42/131,205.70
  6. Step 6: Final answer
    x = 137,710.95

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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.