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Finding the Fourth Proportional to 110,564.40, 165,749.40 and 66,208.80

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Solution

The fourth proportional to 110,564.40, 165,749.40 and 66,208.80 is: 99,254.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,564.40 : 165,749.40 = 66,208.80 : x
  2. Step 2: Convert to fraction form
    110,564.40/165,749.40 = 66,208.80/x
  3. Step 3: Cross multiply
    110,564.40x = 165,749.40 × 66,208.80
  4. Step 4: Simplify right side
    110,564.40x = 10,974,068,874.72
  5. Step 5: Solve for x
    x = 10,974,068,874.72/110,564.40
  6. Step 6: Final answer
    x = 99,254.99

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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.