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Finding the Fourth Proportional to 207,266.52, 310,899.72 and 74,138.70

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Solution

The fourth proportional to 207,266.52, 310,899.72 and 74,138.70 is: 111,208.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,266.52 : 310,899.72 = 74,138.70 : x
  2. Step 2: Convert to fraction form
    207,266.52/310,899.72 = 74,138.70/x
  3. Step 3: Cross multiply
    207,266.52x = 310,899.72 × 74,138.70
  4. Step 4: Simplify right side
    207,266.52x = 23,049,701,071.16
  5. Step 5: Solve for x
    x = 23,049,701,071.16/207,266.52
  6. Step 6: Final answer
    x = 111,208.03

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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.