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Finding the Fourth Proportional to 159,770.72, 239,427.71 and 117,317.71

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Solution

The fourth proportional to 159,770.72, 239,427.71 and 117,317.71 is: 175,808.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,770.72 : 239,427.71 = 117,317.71 : x
  2. Step 2: Convert to fraction form
    159,770.72/239,427.71 = 117,317.71/x
  3. Step 3: Cross multiply
    159,770.72x = 239,427.71 × 117,317.71
  4. Step 4: Simplify right side
    159,770.72x = 28,089,110,647.74
  5. Step 5: Solve for x
    x = 28,089,110,647.74/159,770.72
  6. Step 6: Final answer
    x = 175,808.88

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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.