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Finding the Fourth Proportional to 45,202.98, 67,803.93 and 21,812.88

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Solution

The fourth proportional to 45,202.98, 67,803.93 and 21,812.88 is: 32,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,202.98 : 67,803.93 = 21,812.88 : x
  2. Step 2: Convert to fraction form
    45,202.98/67,803.93 = 21,812.88/x
  3. Step 3: Cross multiply
    45,202.98x = 67,803.93 × 21,812.88
  4. Step 4: Simplify right side
    45,202.98x = 1,478,998,988.62
  5. Step 5: Solve for x
    x = 1,478,998,988.62/45,202.98
  6. Step 6: Final answer
    x = 32,719.06

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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.