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Finding the Fourth Proportional to 103,685.94, 155,487.06 and 40,497.03

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Solution

The fourth proportional to 103,685.94, 155,487.06 and 40,497.03 is: 60,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,685.94 : 155,487.06 = 40,497.03 : x
  2. Step 2: Convert to fraction form
    103,685.94/155,487.06 = 40,497.03/x
  3. Step 3: Cross multiply
    103,685.94x = 155,487.06 × 40,497.03
  4. Step 4: Simplify right side
    103,685.94x = 6,296,764,133.43
  5. Step 5: Solve for x
    x = 6,296,764,133.43/103,685.94
  6. Step 6: Final answer
    x = 60,729.20

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Why These Related Problems?

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