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Finding the Fourth Proportional to 71,783.81, 99,059.11 and 39,952.02

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Solution

The fourth proportional to 71,783.81, 99,059.11 and 39,952.02 is: 55,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783.81 : 99,059.11 = 39,952.02 : x
  2. Step 2: Convert to fraction form
    71,783.81/99,059.11 = 39,952.02/x
  3. Step 3: Cross multiply
    71,783.81x = 99,059.11 × 39,952.02
  4. Step 4: Simplify right side
    71,783.81x = 3,957,611,543.90
  5. Step 5: Solve for x
    x = 3,957,611,543.90/71,783.81
  6. Step 6: Final answer
    x = 55,132.37

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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.