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Finding the Fourth Proportional to 199,577.56, 299,107.12 and 81,111.04

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Solution

The fourth proportional to 199,577.56, 299,107.12 and 81,111.04 is: 121,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,577.56 : 299,107.12 = 81,111.04 : x
  2. Step 2: Convert to fraction form
    199,577.56/299,107.12 = 81,111.04/x
  3. Step 3: Cross multiply
    199,577.56x = 299,107.12 × 81,111.04
  4. Step 4: Simplify right side
    199,577.56x = 24,260,889,574.60
  5. Step 5: Solve for x
    x = 24,260,889,574.60/199,577.56
  6. Step 6: Final answer
    x = 121,561.21

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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.