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Finding the Fourth Proportional to 43,870.80, 65,614.20 and 39,224.40

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Solution

The fourth proportional to 43,870.80, 65,614.20 and 39,224.40 is: 58,664.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,870.80 : 65,614.20 = 39,224.40 : x
  2. Step 2: Convert to fraction form
    43,870.80/65,614.20 = 39,224.40/x
  3. Step 3: Cross multiply
    43,870.80x = 65,614.20 × 39,224.40
  4. Step 4: Simplify right side
    43,870.80x = 2,573,677,626.48
  5. Step 5: Solve for x
    x = 2,573,677,626.48/43,870.80
  6. Step 6: Final answer
    x = 58,664.93

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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.