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Finding the Fourth Proportional to 165,806.60, 248,807.10 and 60,636.20

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Solution

The fourth proportional to 165,806.60, 248,807.10 and 60,636.20 is: 90,989.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,806.60 : 248,807.10 = 60,636.20 : x
  2. Step 2: Convert to fraction form
    165,806.60/248,807.10 = 60,636.20/x
  3. Step 3: Cross multiply
    165,806.60x = 248,807.10 × 60,636.20
  4. Step 4: Simplify right side
    165,806.60x = 15,086,717,077.02
  5. Step 5: Solve for x
    x = 15,086,717,077.02/165,806.60
  6. Step 6: Final answer
    x = 90,989.85

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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.