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Finding the Fourth Proportional to 200,459.61, 300,723.03 and 74,100.15

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Solution

The fourth proportional to 200,459.61, 300,723.03 and 74,100.15 is: 111,162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,459.61 : 300,723.03 = 74,100.15 : x
  2. Step 2: Convert to fraction form
    200,459.61/300,723.03 = 74,100.15/x
  3. Step 3: Cross multiply
    200,459.61x = 300,723.03 × 74,100.15
  4. Step 4: Simplify right side
    200,459.61x = 22,283,621,631.45
  5. Step 5: Solve for x
    x = 22,283,621,631.45/200,459.61
  6. Step 6: Final answer
    x = 111,162.65

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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.