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Finding the Fourth Proportional to 29,203.18, 43,811.28 and 8,426.68

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Solution

The fourth proportional to 29,203.18, 43,811.28 and 8,426.68 is: 12,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,203.18 : 43,811.28 = 8,426.68 : x
  2. Step 2: Convert to fraction form
    29,203.18/43,811.28 = 8,426.68/x
  3. Step 3: Cross multiply
    29,203.18x = 43,811.28 × 8,426.68
  4. Step 4: Simplify right side
    29,203.18x = 369,183,636.95
  5. Step 5: Solve for x
    x = 369,183,636.95/29,203.18
  6. Step 6: Final answer
    x = 12,641.90

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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.