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Finding the Fourth Proportional to 29,316.40, 43,978.20 and 9,589.60

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Solution

The fourth proportional to 29,316.40, 43,978.20 and 9,589.60 is: 14,385.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,316.40 : 43,978.20 = 9,589.60 : x
  2. Step 2: Convert to fraction form
    29,316.40/43,978.20 = 9,589.60/x
  3. Step 3: Cross multiply
    29,316.40x = 43,978.20 × 9,589.60
  4. Step 4: Simplify right side
    29,316.40x = 421,733,346.72
  5. Step 5: Solve for x
    x = 421,733,346.72/29,316.40
  6. Step 6: Final answer
    x = 14,385.58

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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.