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Finding the Fourth Proportional to 43,181.76, 64,772.64 and 16,868.05

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Solution

The fourth proportional to 43,181.76, 64,772.64 and 16,868.05 is: 25,302.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,181.76 : 64,772.64 = 16,868.05 : x
  2. Step 2: Convert to fraction form
    43,181.76/64,772.64 = 16,868.05/x
  3. Step 3: Cross multiply
    43,181.76x = 64,772.64 × 16,868.05
  4. Step 4: Simplify right side
    43,181.76x = 1,092,588,130.15
  5. Step 5: Solve for x
    x = 1,092,588,130.15/43,181.76
  6. Step 6: Final answer
    x = 25,302.08

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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.