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Finding the Fourth Proportional to 39,888.98, 59,843.02 and 11,426.34

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Solution

The fourth proportional to 39,888.98, 59,843.02 and 11,426.34 is: 17,142.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.98 : 59,843.02 = 11,426.34 : x
  2. Step 2: Convert to fraction form
    39,888.98/59,843.02 = 11,426.34/x
  3. Step 3: Cross multiply
    39,888.98x = 59,843.02 × 11,426.34
  4. Step 4: Simplify right side
    39,888.98x = 683,786,693.15
  5. Step 5: Solve for x
    x = 683,786,693.15/39,888.98
  6. Step 6: Final answer
    x = 17,142.25

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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.