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Finding the Fourth Proportional to 65,903.40, 98,608.14 and 39,151.44

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Solution

The fourth proportional to 65,903.40, 98,608.14 and 39,151.44 is: 58,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,903.40 : 98,608.14 = 39,151.44 : x
  2. Step 2: Convert to fraction form
    65,903.40/98,608.14 = 39,151.44/x
  3. Step 3: Cross multiply
    65,903.40x = 98,608.14 × 39,151.44
  4. Step 4: Simplify right side
    65,903.40x = 3,860,650,676.72
  5. Step 5: Solve for x
    x = 3,860,650,676.72/65,903.40
  6. Step 6: Final answer
    x = 58,580.45

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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.