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Finding the Fourth Proportional to 29,672.50, 40,929.60 and 18,345.46

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Solution

The fourth proportional to 29,672.50, 40,929.60 and 18,345.46 is: 25,305.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,672.50 : 40,929.60 = 18,345.46 : x
  2. Step 2: Convert to fraction form
    29,672.50/40,929.60 = 18,345.46/x
  3. Step 3: Cross multiply
    29,672.50x = 40,929.60 × 18,345.46
  4. Step 4: Simplify right side
    29,672.50x = 750,872,339.62
  5. Step 5: Solve for x
    x = 750,872,339.62/29,672.50
  6. Step 6: Final answer
    x = 25,305.33

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.