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Finding the Fourth Proportional to 67,200.60, 100,655.10 and 55,536.60

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Solution

The fourth proportional to 67,200.60, 100,655.10 and 55,536.60 is: 83,184.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,200.60 : 100,655.10 = 55,536.60 : x
  2. Step 2: Convert to fraction form
    67,200.60/100,655.10 = 55,536.60/x
  3. Step 3: Cross multiply
    67,200.60x = 100,655.10 × 55,536.60
  4. Step 4: Simplify right side
    67,200.60x = 5,590,042,026.66
  5. Step 5: Solve for x
    x = 5,590,042,026.66/67,200.60
  6. Step 6: Final answer
    x = 83,184.41

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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.