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Finding the Fourth Proportional to 39,244.80, 58,847.04 and 11,539.20

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Solution

The fourth proportional to 39,244.80, 58,847.04 and 11,539.20 is: 17,302.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,244.80 : 58,847.04 = 11,539.20 : x
  2. Step 2: Convert to fraction form
    39,244.80/58,847.04 = 11,539.20/x
  3. Step 3: Cross multiply
    39,244.80x = 58,847.04 × 11,539.20
  4. Step 4: Simplify right side
    39,244.80x = 679,047,763.97
  5. Step 5: Solve for x
    x = 679,047,763.97/39,244.80
  6. Step 6: Final answer
    x = 17,302.87

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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.