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Finding the Fourth Proportional to 207,291.26, 310,903.65 and 74,146.70

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Solution

The fourth proportional to 207,291.26, 310,903.65 and 74,146.70 is: 111,208.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,291.26 : 310,903.65 = 74,146.70 : x
  2. Step 2: Convert to fraction form
    207,291.26/310,903.65 = 74,146.70/x
  3. Step 3: Cross multiply
    207,291.26x = 310,903.65 × 74,146.70
  4. Step 4: Simplify right side
    207,291.26x = 23,052,479,665.46
  5. Step 5: Solve for x
    x = 23,052,479,665.46/207,291.26
  6. Step 6: Final answer
    x = 111,208.16

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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.