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Finding the Fourth Proportional to 98,381.35, 135,786.43 and 62,564.43

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Solution

The fourth proportional to 98,381.35, 135,786.43 and 62,564.43 is: 86,351.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,381.35 : 135,786.43 = 62,564.43 : x
  2. Step 2: Convert to fraction form
    98,381.35/135,786.43 = 62,564.43/x
  3. Step 3: Cross multiply
    98,381.35x = 135,786.43 × 62,564.43
  4. Step 4: Simplify right side
    98,381.35x = 8,495,400,594.68
  5. Step 5: Solve for x
    x = 8,495,400,594.68/98,381.35
  6. Step 6: Final answer
    x = 86,351.74

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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.