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Finding the Fourth Proportional to 74,366.06, 111,549.10 and 18,962.06

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Solution

The fourth proportional to 74,366.06, 111,549.10 and 18,962.06 is: 28,443.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,366.06 : 111,549.10 = 18,962.06 : x
  2. Step 2: Convert to fraction form
    74,366.06/111,549.10 = 18,962.06/x
  3. Step 3: Cross multiply
    74,366.06x = 111,549.10 × 18,962.06
  4. Step 4: Simplify right side
    74,366.06x = 2,115,200,727.15
  5. Step 5: Solve for x
    x = 2,115,200,727.15/74,366.06
  6. Step 6: Final answer
    x = 28,443.09

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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.