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Finding the Fourth Proportional to 64,911.40, 97,367.10 and 36,820.60

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Solution

The fourth proportional to 64,911.40, 97,367.10 and 36,820.60 is: 55,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,911.40 : 97,367.10 = 36,820.60 : x
  2. Step 2: Convert to fraction form
    64,911.40/97,367.10 = 36,820.60/x
  3. Step 3: Cross multiply
    64,911.40x = 97,367.10 × 36,820.60
  4. Step 4: Simplify right side
    64,911.40x = 3,585,115,042.26
  5. Step 5: Solve for x
    x = 3,585,115,042.26/64,911.40
  6. Step 6: Final answer
    x = 55,230.90

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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.