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Finding the Fourth Proportional to 69,090.40, 103,635.60 and 63,841.60

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Solution

The fourth proportional to 69,090.40, 103,635.60 and 63,841.60 is: 95,762.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,090.40 : 103,635.60 = 63,841.60 : x
  2. Step 2: Convert to fraction form
    69,090.40/103,635.60 = 63,841.60/x
  3. Step 3: Cross multiply
    69,090.40x = 103,635.60 × 63,841.60
  4. Step 4: Simplify right side
    69,090.40x = 6,616,262,520.96
  5. Step 5: Solve for x
    x = 6,616,262,520.96/69,090.40
  6. Step 6: Final answer
    x = 95,762.40

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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.