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Finding the Fourth Proportional to 65,788.60, 98,682.78 and 19,041.40

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Solution

The fourth proportional to 65,788.60, 98,682.78 and 19,041.40 is: 28,562.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,788.60 : 98,682.78 = 19,041.40 : x
  2. Step 2: Convert to fraction form
    65,788.60/98,682.78 = 19,041.40/x
  3. Step 3: Cross multiply
    65,788.60x = 98,682.78 × 19,041.40
  4. Step 4: Simplify right side
    65,788.60x = 1,879,058,287.09
  5. Step 5: Solve for x
    x = 1,879,058,287.09/65,788.60
  6. Step 6: Final answer
    x = 28,562.07

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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.