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Finding the Fourth Proportional to 32,662.66, 48,986.70 and 12,945.64

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Solution

The fourth proportional to 32,662.66, 48,986.70 and 12,945.64 is: 19,415.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,662.66 : 48,986.70 = 12,945.64 : x
  2. Step 2: Convert to fraction form
    32,662.66/48,986.70 = 12,945.64/x
  3. Step 3: Cross multiply
    32,662.66x = 48,986.70 × 12,945.64
  4. Step 4: Simplify right side
    32,662.66x = 634,164,182.99
  5. Step 5: Solve for x
    x = 634,164,182.99/32,662.66
  6. Step 6: Final answer
    x = 19,415.57

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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.