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Finding the Fourth Proportional to 207,210.15, 310,770.27 and 74,099.61

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Solution

The fourth proportional to 207,210.15, 310,770.27 and 74,099.61 is: 111,133.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,210.15 : 310,770.27 = 74,099.61 : x
  2. Step 2: Convert to fraction form
    207,210.15/310,770.27 = 74,099.61/x
  3. Step 3: Cross multiply
    207,210.15x = 310,770.27 × 74,099.61
  4. Step 4: Simplify right side
    207,210.15x = 23,027,955,806.59
  5. Step 5: Solve for x
    x = 23,027,955,806.59/207,210.15
  6. Step 6: Final answer
    x = 111,133.34

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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.