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Finding the Fourth Proportional to 67,911.48, 93,722.94 and 39,611.16

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Solution

The fourth proportional to 67,911.48, 93,722.94 and 39,611.16 is: 54,666.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,911.48 : 93,722.94 = 39,611.16 : x
  2. Step 2: Convert to fraction form
    67,911.48/93,722.94 = 39,611.16/x
  3. Step 3: Cross multiply
    67,911.48x = 93,722.94 × 39,611.16
  4. Step 4: Simplify right side
    67,911.48x = 3,712,474,372.01
  5. Step 5: Solve for x
    x = 3,712,474,372.01/67,911.48
  6. Step 6: Final answer
    x = 54,666.37

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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.