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Finding the Fourth Proportional to 303,069.18, 418,064.22 and 189,695.10

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Solution

The fourth proportional to 303,069.18, 418,064.22 and 189,695.10 is: 261,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,069.18 : 418,064.22 = 189,695.10 : x
  2. Step 2: Convert to fraction form
    303,069.18/418,064.22 = 189,695.10/x
  3. Step 3: Cross multiply
    303,069.18x = 418,064.22 × 189,695.10
  4. Step 4: Simplify right side
    303,069.18x = 79,304,734,019.32
  5. Step 5: Solve for x
    x = 79,304,734,019.32/303,069.18
  6. Step 6: Final answer
    x = 261,672.05

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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.