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Finding the Fourth Proportional to 65,556.70, 98,260.63 and 57,643.90

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Solution

The fourth proportional to 65,556.70, 98,260.63 and 57,643.90 is: 86,400.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,556.70 : 98,260.63 = 57,643.90 : x
  2. Step 2: Convert to fraction form
    65,556.70/98,260.63 = 57,643.90/x
  3. Step 3: Cross multiply
    65,556.70x = 98,260.63 × 57,643.90
  4. Step 4: Simplify right side
    65,556.70x = 5,664,125,539.90
  5. Step 5: Solve for x
    x = 5,664,125,539.90/65,556.70
  6. Step 6: Final answer
    x = 86,400.41

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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.