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Finding the Fourth Proportional to 71,644.14, 98,865.06 and 39,811.14

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Solution

The fourth proportional to 71,644.14, 98,865.06 and 39,811.14 is: 54,937.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,644.14 : 98,865.06 = 39,811.14 : x
  2. Step 2: Convert to fraction form
    71,644.14/98,865.06 = 39,811.14/x
  3. Step 3: Cross multiply
    71,644.14x = 98,865.06 × 39,811.14
  4. Step 4: Simplify right side
    71,644.14x = 3,935,930,744.77
  5. Step 5: Solve for x
    x = 3,935,930,744.77/71,644.14
  6. Step 6: Final answer
    x = 54,937.23

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1.5x scale

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.