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Finding the Fourth Proportional to 43,603.60, 65,432.40 and 17,305.60

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Solution

The fourth proportional to 43,603.60, 65,432.40 and 17,305.60 is: 25,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,603.60 : 65,432.40 = 17,305.60 : x
  2. Step 2: Convert to fraction form
    43,603.60/65,432.40 = 17,305.60/x
  3. Step 3: Cross multiply
    43,603.60x = 65,432.40 × 17,305.60
  4. Step 4: Simplify right side
    43,603.60x = 1,132,346,941.44
  5. Step 5: Solve for x
    x = 1,132,346,941.44/43,603.60
  6. Step 6: Final answer
    x = 25,969.12

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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.