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Finding the Fourth Proportional to 65,625.96, 98,448.60 and 21,237.96

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Solution

The fourth proportional to 65,625.96, 98,448.60 and 21,237.96 is: 31,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,625.96 : 98,448.60 = 21,237.96 : x
  2. Step 2: Convert to fraction form
    65,625.96/98,448.60 = 21,237.96/x
  3. Step 3: Cross multiply
    65,625.96x = 98,448.60 × 21,237.96
  4. Step 4: Simplify right side
    65,625.96x = 2,090,847,428.86
  5. Step 5: Solve for x
    x = 2,090,847,428.86/65,625.96
  6. Step 6: Final answer
    x = 31,860.07

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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.