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Finding the Fourth Proportional to 57,376.40, 86,069.90 and 22,318.72

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Solution

The fourth proportional to 57,376.40, 86,069.90 and 22,318.72 is: 33,480.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,376.40 : 86,069.90 = 22,318.72 : x
  2. Step 2: Convert to fraction form
    57,376.40/86,069.90 = 22,318.72/x
  3. Step 3: Cross multiply
    57,376.40x = 86,069.90 × 22,318.72
  4. Step 4: Simplify right side
    57,376.40x = 1,920,969,998.53
  5. Step 5: Solve for x
    x = 1,920,969,998.53/57,376.40
  6. Step 6: Final answer
    x = 33,480.14

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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.