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Finding the Fourth Proportional to 207,054.68, 310,398.18 and 80,665.67

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Solution

The fourth proportional to 207,054.68, 310,398.18 and 80,665.67 is: 120,926.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,054.68 : 310,398.18 = 80,665.67 : x
  2. Step 2: Convert to fraction form
    207,054.68/310,398.18 = 80,665.67/x
  3. Step 3: Cross multiply
    207,054.68x = 310,398.18 × 80,665.67
  4. Step 4: Simplify right side
    207,054.68x = 25,038,477,629.98
  5. Step 5: Solve for x
    x = 25,038,477,629.98/207,054.68
  6. Step 6: Final answer
    x = 120,926.89

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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.