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Finding the Fourth Proportional to 104,291.64, 156,435.60 and 25,405.68

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Solution

The fourth proportional to 104,291.64, 156,435.60 and 25,405.68 is: 38,108.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,291.64 : 156,435.60 = 25,405.68 : x
  2. Step 2: Convert to fraction form
    104,291.64/156,435.60 = 25,405.68/x
  3. Step 3: Cross multiply
    104,291.64x = 156,435.60 × 25,405.68
  4. Step 4: Simplify right side
    104,291.64x = 3,974,352,794.21
  5. Step 5: Solve for x
    x = 3,974,352,794.21/104,291.64
  6. Step 6: Final answer
    x = 38,108.07

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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.