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Finding the Fourth Proportional to 42,591.82, 63,887.73 and 13,008.07

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Solution

The fourth proportional to 42,591.82, 63,887.73 and 13,008.07 is: 19,512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,591.82 : 63,887.73 = 13,008.07 : x
  2. Step 2: Convert to fraction form
    42,591.82/63,887.73 = 13,008.07/x
  3. Step 3: Cross multiply
    42,591.82x = 63,887.73 × 13,008.07
  4. Step 4: Simplify right side
    42,591.82x = 831,056,063.98
  5. Step 5: Solve for x
    x = 831,056,063.98/42,591.82
  6. Step 6: Final answer
    x = 19,512.11

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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.