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Finding the Fourth Proportional to 48,643.62, 72,936.18 and 19,026.15

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Solution

The fourth proportional to 48,643.62, 72,936.18 and 19,026.15 is: 28,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,643.62 : 72,936.18 = 19,026.15 : x
  2. Step 2: Convert to fraction form
    48,643.62/72,936.18 = 19,026.15/x
  3. Step 3: Cross multiply
    48,643.62x = 72,936.18 × 19,026.15
  4. Step 4: Simplify right side
    48,643.62x = 1,387,694,701.11
  5. Step 5: Solve for x
    x = 1,387,694,701.11/48,643.62
  6. Step 6: Final answer
    x = 28,527.78

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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.