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Finding the Fourth Proportional to 65,788.10, 98,682.03 and 19,040.90

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Solution

The fourth proportional to 65,788.10, 98,682.03 and 19,040.90 is: 28,561.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,788.10 : 98,682.03 = 19,040.90 : x
  2. Step 2: Convert to fraction form
    65,788.10/98,682.03 = 19,040.90/x
  3. Step 3: Cross multiply
    65,788.10x = 98,682.03 × 19,040.90
  4. Step 4: Simplify right side
    65,788.10x = 1,878,994,665.03
  5. Step 5: Solve for x
    x = 1,878,994,665.03/65,788.10
  6. Step 6: Final answer
    x = 28,561.32

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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.